The tendon of the popliteus passes through the popliteal hiatus, entering the knee joint and inserting into the lateral femoral condyle at the end of the popliteal sulcus. Pinto F, Miele V, Scaglione M, Pinto A. Doucet C., Gotra A., Reddy S.M.V., Boily M. Acute calcific tendinopathy of the popliteus tendon: a rare case diagnosed using a multimodality imaging approach and treated conservatively. stabilizes knee joint (resists lateral rotation of tibia on femur) Park JH, Ro KH, Lee DH. Suganuma J, Inoue Y, Tani H, Sugiki T, Sassa T, Shibata R. Reconstruction of the Popliteomeniscal Fascicles for Treatment of Recurrent Subluxation of the Lateral Meniscus. Chief Medical Officer, ProScan Imaging. 1). 4, Fig. 8a-b). Two MR sagittal PDw fat sat consecutive sequences of Wrisberg variant of lateral meniscus with congenital absence of PMFs (with arrow) but normal C-morphology. The site is secure. Early systemic sclerosis: analysis of the disease course in patients with marker autoantibody and/or capillaroscopic positivity. The popliteus muscle rotates the thigh outwards and 'unlocks' the knee when running. Noonan T.J., Garrett W.E., Jr. However, the presence of hemarthrosis, which is a common finding in patients with acute tears of the anterior cruciate ligament with particularly related risk of popliteo-meniscal fascicle tears, would be used as contrast media for better depict the anatomical structures (27) (Fig. Typically there is generalized quite marked muscle swelling and oedema appearing as T2/STIR hyperintensity with intramuscular abscess formation that is the hallmark of pyomyositis.25 Intramuscular abscess typically appears as T1 hypo/isointense, T2 hyperintense with peripheral post contrast enhancement.26 MRI is also essential in evaluating the extent of the infection including adjacent osteomyelitis or septic arthritis and to assess for complications such as compartment syndrome or necrotizing fasciitis. Cohn AK, Mains DB. When present the cyamella can articulate with the lateral condyle of the tibia.6, Injury to the popliteus musculotendinous complex is relatively common and most often occurs in combination with other injuries particularly to but not limited to the other structures of the posterolateral corner of the knee.7 In addition cruciate, collateral ligament injuries and meniscal tears can be associated with popliteus injury (Fig. Had Prior ACL Repair, Case Review: 12 Year Old Male with Problematic Graft, Case Review: 43 Year Old Male with Knee Swelling in Absence of Injury, Case Review: 12 Year Old Male with Anterior Knee Pain. Multiple fat-suppressed axial (4A) and coronal (4B) proton-density-weighted images of the knee from inferior to superior and posterior to anterior, respectively, demonstrate the superolateral ascension of the popliteus muscle (asterisk) and extra-articular and intra-articular tendon (arrow), deep to the fibular collateral ligament (arrowhead) and biceps femoris tendon (short arrow), to the attachment at the popliteal sulcus. Tears of the popliteus tendon should be characterized as partial or complete, intra-articular or extra-articular, and with regards to the proximity to the popliteal sulcus and the extent of retraction. Typically AVM's occur in the cutaneous and subcutaneous tissues however more complex lesions with intra-muscular, intra-articular and intra-osseous components are not uncommon and can create quite a diagnostic challenge. Reference article, Radiopaedia.org (Accessed on 05 Jun 2023) https://doi.org/10.53347/rID-44427, Figure 1: knee ligaments (Gray's illustrations), see full revision history and disclosures, posterior suprapatellar (prefemoral or supratrochlear) fat pad, anterior suprapatellar (quadriceps) fat pad, accessory anterior inferior tibiofibular ligament, superficial posterior tibiotalar ligament, superficial posterior compartment of the leg (calf), accessory extensor digiti secundus muscle, descending branch of the lateral circumflex. 4, Fig. 2). 11). Rosas H. Unraveling the Posterolateral Corner of the Knee. Cohn and Mains described that the superior border of the popliteal hiatus defined the superior popliteo-meniscal ligament while the inferior border defined the inferior PMF (1). Popliteus muscle. 6), the myotendinous junction and the tendon itself (Fig. At the time the article was created Geon Oh had no recorded disclosures. Proper diagnosis of this injury from other injuries in this anatomical area of the lower leg is essential to efficient management . 12, Fig. Gout with involvement of the intra-articular popliteus as well as distal quadriceps tendons. Clinically Oriented Anatomy. Mid-substance posterior cruciate ligament rupture and popliteus muscle partial tear. In case of PMFs tears, in symptomatic patients, surgery represents the treatment of choice (80). It is considered as an intracapsular but extrasynovial and extra-articular structure 4. International Orthopaedics (SICOT). Diffusion tensor MRI to assess skeletal muscle disruption . Axial T1 (a) and PDFS (b) demonstrating diffuse T1 mild hypointensity with diffuse STIR hyperintensity in the popliteus, tibialis anterior and proximal tibia. Your knee will feel tender when pressing in at the back. Correlation with radiographs to assess for associated calcifications may be helpful. The popliteofibular ligament (PFL) extends from the fibular styloid process to the popliteus tendon. Pigmented villonodular synovitis of synovial joints: clinical, pathologic, and radiologic features. Valentini G, Marcoccia A, Cuomo G, Vettori S, Iudici M, Bondanini F, Santoriello C, Ciani A, Cozzolino D, De Matteis GM, Cappabianca S, Vitelli F, Spano A. Masciocchi C, Barile A, Lelli S, Calvisi V. Magnetic resonance imaging (MRI) and arthro-MRI in the evaluation of the chondral pathology of the knee joint. Kaplan EB. 2016;36(6):1776-91. 6). Gray's Anatomy for Students: With STUDENT CONSULT Online Access, 3e. Six weeks of conservative treatment provided a decrease in pain, but no neurological improvement.Electromyography indicated decreased nerve input activity of the FHL, TP and DFL muscles and decreased . Fat-suppressed axial (6A), coronal (6B), and sagittal (6C) proton-density-weighted images of the knee demonstrate a displaced chondral body (arrow) within the popliteal bursa. Of note, the popliteus bursa is a normal fluid-filled and synovial-lined structure along the extra-articular tendon and musculotendinous junction which, on occasion, contains pathology and should not be confused for a musculotendinous injury (Figure 6). The radiological differential includes amyloid arthropathy, haemophila associated arthropathy, and synovial chondromatosis. Acute popliteus tendon tears typically occur in the setting of multi-ligament and meniscal tears and, as such, careful attention should be paid to the adjacent posterolateral corner structures as well as the cruciate ligaments and menisci1-3 (Figure 7). Popliteomeniscal fasciculi could be absent or a tear could occur in association with acute anterior cruciate ligament injury and diagnosis is crucial to treat the consequently hypermobility or locking of the meniscus. Barile A, Arrigoni F, Bruno F, Guglielmi G, Zappia M, Reginelli A, Ruscitti P, Cipriani P, Giacomelli R, Brunese L, Masciocchi C. Computed Tomography and MR Imaging in Rheumatoid Arthritis. T1 (a) and STIR (b) axial sequences showing ill-defined mild TI hyperintensity of the popliteus muscle with subtle peripheral TI hypointensity representing the ossification seen on CT (arrow). Acute Calcific Tendinopathy of the Popliteus Tendon: A Rare Case Diagnosed Using a Multimodality Approach and Treated Conservatively. Axial T1 & PDFS sequences demonstrating relatively homogenous TI iso to mild hyperintensity and PD hyperintensity with a lobulated margin following the course of the popliteus. Skeletal Radiol. 10), this anatomic variant can have major clinical implications owing to accidental injury during surgery, which has been reported during meniscal re-pair [7], total knee arthroplasty [8, 9], and high tibial osteotomy [10, 11] (Fig. WHO classification of soft tissue tumours: an update based on the 2013 (4th) edition. Critical Function of PRDM2 in the Neoplastic Growth of Testicular Germ Cell Tumors. CME Eligible. It is important to differentiate this snapping cause from the others one, like subluxations of the biceps femoris (65), discoid lateral meniscus (66), popliteus (67) and semitendinosus snapping (68). Learn about the Posterolateral Corner on MRI with focus to the popliteus muscle on with regards to anatomy, origin, insertions, and pathologies. HHS Vulnerability Disclosure, Help MR imaging of atraumatic muscle disorders. RadioGraphics 2016;36:1776-1791. The popliteus is the smallest and most superior muscle of the deep posterior compartment of the leg.. Summary. Popliteus injuries can occur in isolation but are most frequently associated with other ligament injuries of the knee including 1-3,6:. The https:// ensures that you are connecting to the Tyler P., Saifuddin A. Kim Y-G, Ihn J-C, Park S-K, Kyung H-S. An arthroscopic analysis of lateral meniscal variants and a comparison with MRI findings. The popliteus muscle is located in the deep posterior compartment of the leg accompanied by three other muscles the flexor hallucis longus, flexor digitorum longus and tibialis posterior. 2009;38(3):543-9. The .gov means its official. Two MR sagittal PDw fat sat consecutive sequences of lateral meniscal instability. MRI scan or other radiography can be used to diagnose tendinopathy. The Posterolateral Corner of the Knee. Clinical investigation. The posterolateral aspect of the knee: anatomy and surgical approach. 1). Displaced meniscal flap extending into the popliteal hiatus. Terminology. Popliteus is an integral component of the posterolateral corner of the knee. Rarely high flow vascular malformations usually arteriovenous malformation or high flow venous malformations can present on radiographs with an aggressive component causing erosion of the underlying bone. Higuchi H, Kimura M, Kobayashi A, Hatayama K, Takagishi K. A novel treatment of hypermobile lateral meniscus with monopolar radiofrequency energy. The chondral defect from which the body arose is identified at the lateral weight-bearing lateral femoral condyle (arrowheads). Staubli HU, Birrer S. The popliteus tendon and its fascicles at the popliteal hiatus: gross anatomy and functional arthroscopic evaluation with and without anterior cruciate ligament deficiency. MRI is superior for evaluating the physical extent of lesions and relationship to adjacent structures.30 The visualisation of phleboliths in soft tissues on radiography or computed tomography (CT) is also useful and frequently an incidental finding, which the radiologist needs to be aware of. 3, Fig. The popliteus musculotendinous complex functions as a static and dynamic restraint to external rotation especially on knee flexion and as a smaller stabilizer regarding internal rotation anterior translation and varus force 1,2. Popliteus injuries are either sudden onset (acute) or gradual onset overuse injuries (chronic). Clinical History: An 84-year-old male presents with lateral knee pain and swelling. Axial(a) and coronal(b) PD demonstrating heterogeneous signal intensity and thickening of the popliteus tendon (arrow) at the femoral notch in keeping with popliteal tendinopathy. LaPrade RF, Konowalchuk BK. 8). The so called Wrisberg variant is the third of the three lateral meniscal variant described by Watanabe and Takeda in their classification and it is characterized by the absence of the PMFs as well as meniscotibial coronary ligament and the meniscofemoral ligament of Wrisberg or Humphrey represent as the only posterior stabilizing structure (59). PVNS is a member of a family of benign proliferative lesions characterized by villous or nodular hyperplasia of the synovium of a joint, bursa or tendon sheath. Osseous loose bodies from knee joint can track along the popliteus and so can PVNS. The popliteus tendon goes from the bottom back of the thighbone across the back of the knee to the top front of the shinbone. Mariani S, La Marra A, Arrigoni F, Necozione S, Splendiani A, Di Cesare E, Barile A, Masciocchi C. Dynamic measurement of patello-femoral joint alignment using weight-bearing magnetic resonance imaging (WB-MRI). In 1999 Johnson and De Smet reviewed sagittal MR images of 66 consecutive patients who had no evidence of injury to the lateral compartment and founded that PMFs were seen in 64 of the 66 patients with only 3% of knees with absent of PMFs (15, 45, 47-50). At the time the article was last revised Yoshi Yu had no recorded disclosures. Cappabianca S, Colella G, Pezzullo MG, Russo A, Iaselli F, Brunese L, Rotondo A. Lipomatous lesions of the head and neck region: Imaging findings in comparison with histological type. Associations. Knee Surgery, Sports Traumatology, Arthroscopy. Cortical avulsion at the femoral attachment of the popliteus tendon. Lippincott Williams & Wilkins. . Chronic pathology of the popliteus tendon, which may be underappreciated, includes tendinosis, crystalline deposition diseases and pigmented villonodular synovitis. MR sagittal proton density weighted with fat saturation (PDw fat sat) sequence (a) and arthroscopy (b) of normal popliteal hiatus with popliteal tendon (arrowheads) and antero-inferior PMF (arrows). aDepartment of Musculoskeletal Radiology, Royal Orthopaedic Hospital NHS Foundation Trust, Birmingham, United Kingdom, bDepartment of Radiology, Peter MacCallum Cancer Centre, Melbourne, Australia. American Journal of Roentgenology 2008 Feb;190(2):449-58. Dubois J., Alison M. Vascular anomalies: what a radiologist needs to know. The popliteus tendon is considered as intra-capsular . Chondral body displaced into the popliteal bursa status post recent transient lateral patellar dislocation. At day, the gold standard for diagnosis is the arthroscopic evaluation that allows the direct visualization of the popliteo-meniscal ligaments at popliteal hiatus and evaluation of lateral meniscal movements. In a case study, we found finding of an unusual amount of fluid related to the popliteus sheath but . Tear of MPFs is the more common lesion involved in the 80% of patients with grade III of posterolateral injuries associated with anterior cruciate ligament (ACL) insufficiency (6-10). Di Zazzo E, Porcile C, Bartollino S, Moncharmont B. ADVERTISEMENT: Radiopaedia is free thanks to our supporters and advertisers. Coronal (1A), axial (1B, 1D), and sagittal (1C) fat-suppressed proton-density-weighted images of the knee are provided. However in literature there is still debate about the number of popliteomeniscal bands (26), most studies described at least two different fascicles: an antero-inferior and postero-superior (2, 27-30). We demonstrate a case of myositis ossificans isolated to the popliteus muscle demonstrating typical peripheral calcification on CT (Fig. 3). The popliteus muscle-tendon unit forms robust attachments in the superior, inferior, medial, and lateral oblique aspects, highlighting its importance in posterolateral stability of the knee. insertion: posterior surface of proximal tibia at the medial 2/3 rd aspect, just superior to the soleal line. At the time the article was last revised Bassem Marghany had no recorded disclosures. Learn about the Posterolateral Corner on MRI with focus to the popliteus muscle on with regards to anatomy, origin, insertions, and pathologies. Bethesda, MD 20894, Web Policies 4.14 and 4.15). Pathologies associated with the popliteus tendon include the following 6: posterolateral corner injury; popliteus tendinopathy Unable to process the form. Popliteus injuries can be found in up to two-thirds of patients undergoing surgery for posterolateral instability 1,2 with myotendinous strains being the most common subtype 3.. 23 of 24 patients had muscle tears and 3 patients had combined muscle and tendon tears or tendon alone.8 Strain injuries affect the myotendinous junction, the weakest point of the musculotendinous unit.11 Tendon injuries can occur at the popliteal hiatus or at the femoral attachment where there can be an associated osteochondral avulsed fragment. Like other tendons, the popliteus tendon is hypointense and can be easily identified on an MRI of the knee subjacent to the fibular collateral ligament. Become a Gold Supporter and see no third-party ads. origin:lateral femoral condyle and posterior horn of lateral meniscus, insertion:posterior surface of proximal tibia at the medial 2/3rd aspect, just superior to the soleal line, stabilizes knee joint (resists lateral rotation of tibia on femur), unlocks knee joint (laterally rotates femur on fixed tibia), Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys. Using the 3D isotropic proton density sequence, Ahn et al found sensitivity and specificity of 58% and 92% for PMF injury (77). Diagnostic accuracy of ultrasound, conventional radiography and synovial fluid analysis in the diagnosis of calcium pyrophosphate dihydrate crystal deposition disease. De Filippo M, Corsi A, Evaristi L, Bertoldi C, Sverzellati N, Averna R, Crotti P, Bini G, Tamburrini O, Zompatori M, Rossi C. Critical issues in radiology requests and reports. Snapping knee caused by a popliteomeniscal fascicle tear of the lateral meniscus in a professional Taekwondo athlete. Non-operative rehabilitation of isolated popliteus tendon rupture in a rugby player. Related pathology. Miele V, Di Giampietro I. They finally stated that a significantly high incidence of abnormal sPMFs was found not only in RSLM joint but also in contralateral knees (44). The popliteus is a relatively small but unique muscle of the knee. In the intermediate phase, 48 weeks peripheral calcification becomes apparent radiographically. Acta Biomed. Rarely, hydroxyapatite deposition occurs at the popliteus tendon.4 Radiographs demonstrate a calcification or calcifications in the expected location of the popliteus tendon and if an MRI is obtained, associated edema and fluid should be noted. Other tumours that can have associated calcification/ossification include synovial sarcoma, parosteal and soft tissue osteosarcoma, soft tissue chondrosarcoma, recurrent giant cell tumour, bizarre parosteal osteochondromatous proliferation (Nora's lesion) and bone sclerosing dysplasia such as melorheostosis.16. 5).1 The tendon traverses underneath the posterolateral joint capsule and arcuate ligament to move from extra-capsular to intra-capsular. As said earlier, isolated injuries to popliteus muscle are rare and only 2 out of 2412 knee MRI studies showed isolated acute rupture of the popliteus tendon. Surgeons and radiologists need to review the popliteus while examining the knee or reporting MRI of knee. Coronal PDFS (a) and axial PDFS(b) showing focal nodule synovitis within the tendon sheath of the popliteus. Doucet C, Gotra A et al. This recess extends from the popliteal hiatus along the proximal part of the popliteus tendon. Skeletal Radiol. The popliteus tendon starts outside the knee, attaching to the thigh bone (femur) and the lateral meniscus. Ohtoshi K, Kimura M, Kobayashi Y, Higuchi H, Kikuchi S. Arthroscopic thermal shrinkage for hypermobile lateral meniscus. Popliteomeniscal fascicle tear: diagnosis and operative technique. Incidence and MRI characterization of the spectrum of posterolateral corner injuries occurring in association with ACL rupture. Doucet C, Gotra A, Reddy S, Boily M. Acute Calcific Tendinopathy of the Popliteus Tendon: A Rare Case Diagnosed Using a Multimodality Imaging Approach and Treated Conservatively. (www.actabiomedica.it). LESSON 3, TOPIC 18. It has 3 origins: the lateral femoral condyle, the fibular head, and the lateral meniscus. Pyomyositis is a subacute infection, often referred to as a tropical myositis due to its penchant for warmer climes. The relatively small, triangular and obliquely oriented popliteus muscle ascends superolaterally from a broad attachment at the posteromedial tibia just above the soleal line, continues as a tendon deep to the lateral collateral ligament and biceps femoris tendon through the popliteal hiatus, and inserts at the popliteal sulcus of the lateral femoral condyle. 6. Relationships Between the Joints of the Knee, The Basics of the Posterior Cruciate Ligament, Basic Anterior Cruciate Ligament (ACL) Anatomy, The Anatomy of the Anterior Cruciate Ligament Part 2, Anterior Cruciate Ligament Anatomy: Axial View, Anterior Cruciate Ligament Anatomy: Coronal View, Anterior Cruciate Ligament on MRI: Sagittal Views, Anterior Cruciate Ligament on MRI: Axial View, Anterior Cruciate Ligament on MRI: Coronal View, Medial Collateral Ligament Basics: Layer 1, Medial Collateral Ligament Basics: Layer 2 & 3, The Anatomy of the Lateral Collateral Ligament Complex - FCL, The Anatomy of the Lateral Collateral Ligament Complex (LCL) on MRI, The Anatomy of the Lateral Collateral Ligament Complex, The Anatomy of the Quadriceps Femoris Tendon of the Knee, MRI Anatomy of the knee: Quadricep Femoral Tendon, The Knee Anatomy: Posterior Medial Corner, The Posteromedial Corner: Semimembranosus Expansions, The Posteromedial Corner: Semimembranosus Expansions part 2, The Posteromedial Corner: Semimembranosus Expansions part 3, The Posteromedial Corner: Semimembranosus Expansions part 4, The Posteromedial Corner: Posterior Oblique Ligament, The Posteromedial Corner: Posterior Oblique Ligament part 2, The Posteromedial Corner: Oblique Popliteal Ligament, The Posteromedial Corner: Posterior Capsule, The Posterolateral Corner Anatomy: Introduction, The Posterolateral Corner Anatomy: Popliteus Muscle on MRI, The Posterolateral Corner: Arcuate and Fabellofibular Ligament, The Posterolateral Corner: Arcuate and Fabellofibular Ligament on MRI, The Posterolateral Corner Anatomy: Biceps Femoris Tendon, Knee Case Review: 14Yr old with Posterolateral Corner Football Injury, Case Review: 54 year old Male with a Twisting Injury, Case Review: 28 Year Old Football Player Who Heard a Pop While Making a Cut, Case Review: 90 Year Old Female Patient, No History of Trauma, Now Has Swelling, Case Review: Return to 14 Year Old Football Player Case, Case Review: 37 Year Old Male with Complex Knee Instability, Case Review: 28 Year Old Injured in a Fall, Case Review: PCL Injury Companion Discussion, Unknown Knee Case: 54yr Old Male With Knee Swelling, Case Review: 54 Year Old Male with injury and a small PCL, Case Review: 54 Year Old Male Assessing the Other Posterior Corner, Unknown Knee Case: 25yr Old involved in MVA, Case Review: 49 Year Old with Osteoarthritis, Case Review: 49 Year Old Female with Knee Pain and a Sensation of Catching, Case Review: 66 Year Old Female with Strange PCL Presentation, Case Review: 51 Year Old Male with Worsening Chronic Knee Pain, Case Review: 36 Year Old Female with Knee Locking after Kickball Game, Case Review: 23 Year Old Male with Pain After a Fall, Case Review: 22 Year Old Male with Knee Pain. It is a flat triangular muscle that acts as a major stabilizer of the posterolateral knee. Accessibility Its tendon inserts on the lateral epicondyle, just anteroinferior to the proximal attachment of the lateral collateral ligament and passes posteriorly to the posterior horn of the lateral meniscus. Muscle tears are indirect muscle injury that occurs in eccentric . Vascular malformations often occur as isolated lesions or may occasionally present as part of a spectrum of syndromic disease such as Klippel Trenaunay syndrome or Hereditary Haemorrhagic Telangiectasia (HHT). Overlying bursitis is additionally apparent. sharing sensitive information, make sure youre on a federal A spectrum of pathologies can involve the popliteus. Hughes T.H., Sartoris D.J., Schweitzer M.E., Resnick D.L. Note the PMFs torn (arrow). Hayeri M.R., Ziai P., Shehata M.L., Teytelboym O.M., Huang B.K. Fat-suppressed coronal (9A), sagittal (9B), and axial (9C) proton-density-weighted images of the knee demonstrate a tendon avulsion of the femoral attachment of the popliteus. In this retrospective study we will review the anatomy of the popliteus and pathologies of the popliteus muscle and tendon, which include tears, infection, arteriovenous malformation, pigmented villonodular synovitis,. Popliteus tendinosis results from chronic repetitive stress, may be seen with downhill runners and is characterized by tendon enlargement and intrasubstance intermediate signal. Reference article, Radiopaedia.org (Accessed on 05 Jun 2023) https://doi.org/10.53347/rID-89179. The popliteus receives arterial blood supply from the popliteal artery via the medial inferior genicular branch and the muscular branch of the posterior tibial artery.3 Innervation is via the tibial nerve from the anterior rami of L4, L5 and S1. Knee Meniscus Signals - Hold 'em or Fold 'em? Inclusion in an NLM database does not imply endorsement of, or agreement with, After a movement that has locked the knee, the MR sagittal PDw fat sat (c) and coronal PDw fat sat (d) sequences show the antero-medial dislocation of posterior horn of lateral meniscus. Am J Sports Med. The PMFs have a crucial role as a stabilizers of the knee, avoiding the instability of the lateral meniscus during flexion and extension of the knee (11, 16, 37, 73). Pigmented villonodular synovitis: MRI characteristics. 2) (31). Vascular malformation involving the lower limb and in particular the popliteal fossa are well described. It is not uncommon to see interstitial splitting and partial tearing superimposed upon tendinosis (Figure 10). The posterosuperior PMF fascicle arises from the posterosuperior edge of the posterior horn of the lateral meniscus just medial to the popliteus tendon and it blends to the posterior capsule and the popliteus tendon; it forms the roof of the popliteal hiatus (Fig. 2018;89(1-S):7-17. The constellation of findings is typical for pigmented villonodular synovitis. National Library of Medicine In a small percentage of individuals, it is bifurcated 5. Objective: Popliteal muscle and tendon injuries are thought to be unusual. 10, Fig. 3D render of the popliteus musculotendinous complex with the biceps femoris tendon (BT) partially removed demonstrates the popliteus tendon (PT) passing deep to the fibular collateral ligament (FCL) and inserting at the popliteal sulcus of the lateral femoral condyle. 2) (31, 42, 43). An injury or strain to the muscle or tendon can cause posterior or posterolateral knee pain. . The popliteus tendon ascends the posterolateral corner of the knee in a superolateral direction, running through the popliteal hiatus deep to the arcuate and fabellofibular ligaments. 5). Received 2021 Jan 12; Revised 2021 May 22; Accepted 2021 May 23. Last's Anatomy. Kamalapur M.G., Patil P.B., Joshi S., Shastri D. Pseudomalignant myositis ossificans involving multiple masticatory muscles: imaging evaluation. 1Department of Medicine and Health Science V. Lee D-H, Kim T-H, Kim J-M, Bin S-I. Then it passes down and forms a muscle across the back of the knee to insert into the leg bone (tibia). Popliteomeniscal Fascicle Tears Causing Symptomatic Lateral Compartment Knee Pain Diagnosis by the Figure-4 Test and Treatment by Open Repair. The popliteus tendon is intra-capsular, but extra-synovial and forms a crucial component of the posterolateral corner of the knee (Fig. 5).8,9 Popliteus injuries are detected in 1% of all knee MRI examinations.8. The presence of an avulsed osteochondral fragment is favourable for subsequent surgical repair.12. However patients with no significant history can also be affected, and there is a higher incidence among children and young adults.23 The lower limbs tend to be the most commonly affected especially the thigh musculature and in particular the quadriceps, followed by the psoas and gluteal muscles.24 No case of pyomyositis of popliteus has been reported in literature. Shittu A., Deinhardt-Emmer S., Vas Nunes J., Niemann S., Grobusch M.P., Schaumburg F. Tropical pyomyositis: an update. When the popliteo-meniscal fascicles are disrupted, the normal peripheral hoop tension of the lateral meniscus is lost, and consequently the lateral meniscus could be displaced medially into the joint (78) (Fig. De Filippo M, Pogliacomi F, Bertellini A, Araoz PA, Averna R, Sverzellati N, Ingegnoli A, Corradi M, Costantino C, Zompatori M. MDCT arthrography of the wrist: diagnostic accuracy and indications. Multiple fat-suppressed axial (4A) and coronal (4B) proton-density-weighted images of the knee from inferior to superior and posterior to anterior, respectively, demonstrate the superolateral ascension of the popliteus muscle (asterisk) and extra-articular and intra-articular tendon (arrow), deep to the fibular collateral . Positive findings on radiographs include joint effusions, which can be hyperdense effusions indicative of haemarthrosis. 1 and 2) ().They serve as a primary restraint to external rotation and a secondary restraint to varus stress ().The complex itself consists of the popliteal tendon attachment on the popliteal sulcus of the lateral femoral condyle . Popliteomeniscal fasciculi and lateral meniscal stability. Disorders of the knee; p. 45. 9). 1. The majority of popliteus tears were involving the muscular or myotendinous portion; in this study 33/38: 86.8%, while only five cases had femoral tendon avulsion. Check for errors and try again. MRI remains the gold standard in the radiological diagnoses of pyomyositis. Journal of Clinical Orthopaedics and Trauma. Nurzynska D, DiMeglio F, Castaldo C, Latino F, Romano V, Miraglia R, Guerra G, Brunese L, Montagnani S. Flatfoot in children: Anatomy of decision making. Walczak B.E., Johnson C.N., Howe B.M. Sagittal (2C) and axial (2D) fat-suppressed proton density-weighted images of the knee demonstrate an infiltrative appearance of the distal quadriceps tendon (arrows), similar to the process involving the popliteus tendon. 1a-b). Ahn SJ, Jeong YM, Lee BG, Sim JA, Choi HY, Kim JH, Lee SW. ISBN:0702051314. Stephen J Pomeranz, MD. 4. Post contrast enhancement is variable but often pronounced due to the hyper-vascular nature of the disease. Contiguous fat-suppressed coronal (11A) and axial (11B) proton density-weighted images of the knee demonstrate thickening and intermediate signal infiltration of the popliteus tendon (arrows) and, to a lesser extent, similar-appearing nodular intermediate signal foci deep to the proximal tibial collateral ligament (arrowheads). Pigmented villonodular synovitis. The popliteal recess is an extension of the synovial membrane of the knee joint. Epidemiology. Russo A, Capasso R, Varelli C, Laporta A, Carbone M, DAgosto G, Giovine S, Zappia M, Reginelli A. MR imaging evaluation of the postoperative meniscus. Axial(a) and coronal (b) PDFS sequences demonstrating low intensity loose bodies along the popliteus (arrow). Coronal PD MR sequence showing the popliteus muscle and tendon (red outline) and popliteofibular ligament (arrow). It has been denoted as the 5th ligament of the knee 3. Very rarely the cyamella, a small sesamoid bone can be found within the tendon or myotendinous junction. It is a component of the posterolateral corner of the knee and acts as a major stabilizer of the posterolateral knee. Folia Morphol. Tropical pyomyositis (myositis tropicans): current perspective. Case Report: A Hypermobile Wrisberg Variant Lateral Discoid Meniscus Seen on MRI. A correct diagnosis of the PMFs pathology is crucial to establish the suitable surgical treatment for each patient. Radiographs can often appear normal during this phase. Guney H, Kaya D, Yilgor C, Cilli M, Aritan S, Yuksel I, Doral MN. Routine assessment of the tendon and its hiatus in all imaging planes should be performed to ensure that relevant pathology is not overlooked. Klauser AS, Tagliafico A, Allen GM, Boutry N, Campbell R, Court-Payen M, Grainger A, Guerini H, McNally E, OConnor PJ, Ostlere S, Petroons P, Reijnierse M, Sconfienza LM, Silvestri E, Wilson DJ, Martinoli C. Clinical indications for musculoskeletal ultrasound: a Delphi-based consensus paper of the European Society of Musculoskeletal Radiology. Munshi M, Pretterklieber ML, Kwak S, Antonio GE, Trudell DJ, Resnick D. MR imaging, MR arthrography, and specimen correlation of the posterolateral corner of the knee: an anatomic study. Even if few articles have been published articles on the semiotic signs and diagnostic accuracy of MRI in detection of acute and chronic PMFs injury in non-subluxated meniscus, the absence of the continue linear structures referable to PMFs and a water-signal interposed between the posterior horn of lateral meniscus and joint capsule should be considered pathologic (75, 77) (Fig. Magnetic resonance imaging in the evaluation of anatomical risk factors for pediatric obstructive sleep apnoea-hypopnoea: a pilot study. George M, Wall EJ. Myositis ossificans. . Despite many treatments have being proposed in literature since now there is high recurrence of knee locking after repair and it is fundamental to develop new surgical techniques in order to achieve better outcome. ISBN:0702033944. Cuomo G, Zappia M, Iudici M, Abignano G, Rotondo A, Valentini G. The origin of tendon friction rubs in patients with systemic sclerosis: a sonographic explanation. In complete LCL tears, there is a discontinuity of the fibers, and edema or hemorrhage of high signal intensity on fluid-sensitive MR images is detected at the tendon defect (Figs. Cultures in the case were positive for mycobacterium tuberculous (TB). The popliteal hiatus is best evaluated in the sagittal plane (4C), as in this fat-suppressed proton-density-weighted image. The tendon attaches to the lateral meniscus via superior and inferior popliteomeniscal fascicles. MRI. This anatomic condition predisposes the posterior horn to hypermobility with locked or recurrent subluxation of lateral meniscus leading to knee locking or snapping in a young patient (61-64) (Fig. Potenza DM, Guerra G, Avanzato D, Poletto V, Pareek S, Guido D, Gallanti A, Rosti V, Munaron L, Tanzi F, Moccia F. Hydrogen sulphide triggers VEGF-induced intracellular Ca(2)(+) signals in human endothelial cells but not in their immature progenitors. Design and patients: The study included 24 patients where the diagnoses of popliteal injuries were prospectively made based on MR appearances. In ad- Ripani M, Continenza MA, Cacchio A, Barile A, Parisi A, De Paulis F. The ischiatic region: normal and MRI anatomy. The lateral meniscus shows discoid morphology (arrowheads), congenital absence of PMFs (with arrow) and it was stabilized only by the Wrisberg ligament (black arrows). {"url":"/signup-modal-props.json?lang=us"}, Oh G, Yu Y, Hacking C, et al. Generally, its main action is to rotate the leg. Axial (a) and coronal (b) CT arthrogram demonstrating the popliteus tendon (arrow) located in the popliteal groove of the lateral femoral condyle. It is also called popliteus tendinitis. Reginelli A, Zappia M, Barile A, Brunese L. Strategies of imaging after orthopedic surgery. 2017;46)7):1003-6. Miele V, Di Giampietro I, Ianniello S, Pinto F, Trinci M. Diagnostic imaging in pediatric polytrauma management. Congenital absence or isolated injuries of the PMFs can result in micro or gross instability of the meniscus producing snapping or locking of the knee (11-15); tear or insufficiency of PMFs associated with ACL tear increases the knee laxity in as many as 25% of patients. 5). Pain during this manoeuvre indicates injury to popliteus muscle. The aetiology of PVNS is unknown but has been associated with trauma, haemarthrosis, chronic inflammation, disorders of lipid metabolism and chromosomal abnormalities including trisomy 5 and 7.17. Masciocchi C, Conti L, DOrazio F, Conchiglia A, Lanni G, Barile A. In the World Health Organization (WHO) classification it is classified as a member of the tenosynovial giant-cell tumours group of which there are two types with similar histological appearance including a localised or nodular form and a diffuse type also known as PVNS. De Filippo M, Bertellini A, Sverzellati N, Pogliacomi F, Costantino C, Vitale M, Zappia M, Corradi D, Garlaschi G, Zompatori M. Multidetector computed tomography arthrography of the shoulder: diagnostic accuracy and indications. Popliteus injuries can occur in isolation but are most frequently associated with other ligament injuries of the knee including 1-3,6:. ISBN:1451119453. The popliteofibular ligament is a relatively consistent ligament, which secures the popliteus myotendinous junction to the posterior aspect of the fibular styloid process (Fig. Pascale, Naples, Italy, The popliteomeniscal fascicules (PMFs) provide the attachment of the lateral meniscus to the popliteus musculotendinous region, forming the floor and the roof the popliteal hiatus. Ultrasound-guided injection of platelet-rich plasma in chronic Achilles and patellar tendinopathy. Tiberio, University of Molise, Campobasso, Italy E-mail: Received 2017 Sep 15; Accepted 2017 Dec 20. Briganti F, Delehaye L, Leone G, Sicignano C, Buono G, Marseglia M, Caranci F, Tortora F, Maiuri F. Flow diverter device for the treatment of small middle cerebral artery aneurysms. Jadhav S.P., More S.R., Riascos R.F., Lemos D.F., Swischuk L.E. In a study of traumatic injury by Brown etal. Assessment of the popliteal hiatus on sagittal images is important as pathology such as meniscal flaps and loose bodies occasionally extend into this area (Figure 5). Masciocchi C, Lanni G, Conti L, Conchiglia A, Fascetti E, Flamini S, Coletti G, Barile A. Soft-tissue inflammatory myofibroblastic tumors (IMTs) of the limbs: Potential and limits of diagnostic imaging. The findings in (10a-12a) indicate a combined PCL injury with associated injury of the posterolateral corner. Acyamella causing popliteal tendonitis. HFUS allows outstanding visualisation of superficial lesions whilst Doppler ultra-sonography is the most straightforward way to assess flow dynamics. Using three-dimensional isotropic SPACE MRI to detect posterolateral corner injury of the knee. Aspiration of the popliteus component cultured positive for staphylococcus aureus. The popliteus tendon is a strong but often underappreciated tendon and an important site for traumatic and chronic pathology. Coronal, (a), sagittal (b) and axial (c) PDFS MR showing marked oedema involving the popliteus muscle (arrow) in keeping with grade 2 strain. Current Concepts on the Morphology of Popliteus Tendon and Its Clinical Implications. 13).22 The risk factors include diabetes, immunocompromised states, intravenous drug use, cellulitis and penetrating injuries. Even if other studies are required to standardize and validate the semiotic signs, the MRI represents a valid method to help in the PMF abnormalities. Its tendon inserts on the lateral epicondyle, just anteroinferior to the proximal attachment of the lateral collateral ligament and passes posteriorly to the posterior horn of the lateral meniscus. For this reason if unstable condition of meniscus was suspected, arthroscopic observation with probing into the popliteo-meniscal fascicle area is essential for the identification of the fascicle tears (79). Shin H-K, Lee H-S, Lee Y-K, Bae K-C, Cho C-H, Lee K-J. This work is licensed under a Creative Commons Attribution 4.0 International License, MRI knee, knee ligaments, knee: posterolateral corner. HHS Vulnerability Disclosure, Help Barile A, Conti L, Lanni G, Calvisi V, Masciocchi C. Evaluation of medial meniscus tears and meniscal stability: Weight-bearing MRI vs arthroscopy. History of trauma and oedema of popliteus on MRI is strain and presence of peripheral rim of ossification in the muscle belly helps one to make the diagnosis of myositis ossificans. The popliteomeniscal fascicules (PMFs) provide the attachment of the lateral meniscus to the popliteus musculotendinous region, forming the floor and the roof of the popliteal hiatus. It is important to be aware of the normal magnetic resonance (MR) imaging appearance of the popliteus musculotendinous complex and its relation to other structures of the posterolateral corner for accurate . sharing sensitive information, make sure youre on a federal For the popliteus muscle, some of these main symptoms that may be present in the event of a strain or tear: Pain in the back of the knee. This Web Clinic will delve into the anatomy and function of the popliteus tendon with case examples of both traumatic and chronic disease. As the disease progresses bony erosions can develop involving both sides of the joint with thin sclerotic margins.20, MRI is the modality of choice for diagnoses and surveillance of PVNS. official website and that any information you provide is encrypted Popliteus injuries can be found in up to two-thirds of patients undergoing surgery for posterolateral instability 1,2 with myotendinous strains being the most common subtype 3.. Bencardino J.T., Rosenberg Z.S., Brown R.R., Hassankhani A., Lustrin E.S., Beltran J. Traumatic musculotendinous injuries of the knee: diagnosis with MR imaging. Bacterial osteomyelitis: findings on plain radiography, CT, MR, and scintigraphy. Partial tears may be treated conservatively whereas complete tears retracted beyond the popliteal hiatus require an open or combined approach. Hemosiderin deposition in the synovium leads to shortening of T2 relaxation times and characteristic T2 hypointensity(Fig. This was a biopsy proven arteriovenous malformation. The typical appearance is a synovial based mass with T1 intermediate to hypointense signal change. Abstract. Muscle strain is a term that is used variably clinically and in the medical literature. Less commonly, the tendinopathy may be secondary to non-traumatic causes, e.g. The popliteus tendon is a common intra-articular location for gout in the knee. Accessibility If unrecognized (Fig. Acute injuries to the popliteus tendon typically occur in conjunction with other injuries to the posterolateral corner structures of the knee, the cruciate ligaments and menisci and, rarely, in isolation. Guha A.R., Gorgees K.A., Walker D.I. 9). Fat-suppressed coronal (7A), axial (7B), and sagittal (7C) proton-density-weighted images of the knee demonstrate a significant posterolateral corner knee injury with a tendon avulsion at the femoral attachment of the popliteus (arrow), a complete tear of the mid-substance fibular collateral ligament (short arrow) and tearing of the posterolateral joint capsule (arrowhead). The popliteus tendon serves as an origin for the politeomeniscal fascicles. Simonian PT, Sussmann PS, van Trommel M, Wickiewicz TL, Warren RF. 14). Tiberio, University of Molise, Campobasso, Italy, 2Department of Internal and Experimental Medicine, Magrassi-Lanzara, Institute of Radiology, Second University of Naples, Naples, Italy, 3Department of Advanced Biomedical Sciences, Federico II University, Napoli, Italy, 4Department of Radiology, Cardarelli Hospital, Naples, Italy, 5Villa Stuart Sport Clinic, FIFA medical Centre of Excellence, Rome, Italy, 6Division of Musculoskeletal Oncology Surgery, National Cancer Institute G. Infective process though rare can be diagnosed with presence of abscess and marked soft tissue oedema on MR with raised inflammatory markers. The popliteus muscle is a small muscle on the posterolateral corner of the knee. Cappabianca S, Colella G, Russo A, Pezzullo M, Reginelli A, Iaselli F, Rotondo A. Maxillofacial fibrous dysplasia: personal experience with gadoliniumenhanced magnetic resonance imaging. 9). Some different treatments have been reported in literature: meniscectomy, coronary ligament and meniscocapsular repair, and thermal shrinkage of the posterolateral capsule (11, 44, 81). Brown T.R., Quinn S.F., Wensel J.P., Kim J.H., Demlow T. Diagnosis of popliteus injuries with MR imaging. MRI readily delineates injuries of bone, other ligaments, menisci, cartilage, capsule, tendons, and vascular structures. Locked knee caused by meniscal subluxation: magnetic resonance imaging and arthroscopic verification. Camarillo M, Johnson DL. MRI appearance of Wrisberg variant of discoid lateral meniscus. Zabrzyski J, Huri G, Yataganbaba A et al. What are the findings? The tendon appears enlarged, diffusely infiltrated and intermediate in signal and erosive or cystic change may be present at the popliteal sulcus as in the initial case. MRI also aids in planning surgical intervention by delineating degree of soft tissue involvement.27. The posterolateral corner of the knee: evaluation under microsurgical dissection. MRI of the right knee revealed a split tear of the popliteus tendon at its attachment on the lateral femoral condyle (Fig. Tria A.J., Jr., Johnson C.D., Zawadsky J.P. In the second half of 1900s, some anatomic studies claim the important function of the PMF as stabilizers of the lateral meniscus; these anatomical structures work in conjunction with the popliteus musculotendinous unit to prevent excessive lateral meniscal movement and possible meniscus subluxation (1-5). The popliteus is a thin and flat muscle that forms part of the floor of the popliteal space. Correspondence: Marcello Zappia, MD, PhD, Department of Medicine and Health Science V. Symptoms include: Pain at the back of your knee joint. Simonian PT, Sussmann PS, Wickiewicz TL, Potter HG, van Trommel M, Weiland-Holland S, Warren RF. Comprehensive review of the anatomy, function, and imaging of the popliteus and associated pathologic conditions. An MRI showed that the popliteus muscle had ruptured with a hematoma in the upper calf fibres, causing pressure against the neurovascular bundle. Popliteomeniscal fascicle tears. Despite many treatments have being proposed in literature since now there is high recurrence of knee locking after repair and it is fundamental to develop new surgical techniques in order to achieve better outcome. The presence of an avulsed osseous fragment should also be noted as these can be fixated back into place (Figure 8). Diamantopoulos A, Tokis A, Tzurbakis M, Patsopoulos I, Georgoulis A. Chauhan S., Jain S., Varma S., Chauhan S.S. MR sagittal PDw fat sat sequence of normal postero-superior (arrowhead) and postero-inferior PMFs (arrow). Temponi EF, de Carvalho Junior LH, Saithna A, Thaunat M, Sonnery-Cottet B. An MRI scan was performed, and a complete tear of the popliteus tendon at its musculo-tendinous junction with retraction to the popliteus hiatus and associated oedema around the muscle belly was demonstrated on standard sagittal (Fig. In this case, the popliteal sulcus is empty (short arrow) and the torn, redundant and retracted tendon (arrow) remains intra-articular and sits folded over itself posterior to the posterior horn lateral meniscus. Although the popliteus tendon is an integral component of the posterolateral corner of the knee as well as a site of chronic and insidious pathology, this long and strong tendon with its unique anatomy is oftentimes overlooked. Careers, Unable to load your collection due to an error. LaPrade RF. 2017;46(7):1003-6. Koong D.P., An V.V.G., Lorentzos P., Moussa P., Sivakumar B.S. Although a popliteo-meniscal fascicle tear often cause vague mechanical symptoms, their tears may be associated with a postero-lateral instability and/or knee snapping sensation due to subluxation of the lateral meniscus (63, 69, 76). Grassi R, Lombardi G, Reginelli A, Capasso F, Romano F, Floriani I, Colacurci N. Coccygeal movement: assessment with dynamic MRI. The popliteus muscle, along with PCL (posterior cruciate ligament ), stabilises the femur over fixed tibia in the stance . Axial PD(a) and PDFS (b) demonstrating low signal intensity focus in the muscle belly of popliteus (arrow) in keeping with PVNS. Terry GC, LaPrade RF. Federal government websites often end in .gov or .mil. The risk of strain varies among muscles based on their fiber composition, size, length, and architecture, with pennate muscles being at highest risk. Myositis ossificans of popliteus muscle is extremely rare and we could not find any reported case in literature. RadioGraphics. The popliteus is a small muscle located at the back of the knee joint. 4 min. The popliteus tendon originates on the anterior aspect of the popliteus groove just anterior and inferior to the origin of the lateral collateral ligament and extends inferiorly and medially to insert on the posterior medial aspect of the tibia (Fig. Synovial proliferative diseases such as pigmented villonodular synovitis also may extend along the popliteus tendon (Figure 11). It usually forms the posterolateral border or runs through the subpopliteal recess or popliteal bursa. At the time the article was created Joachim Feger had no recorded disclosures. A tendon is a cord of tough tissue that connects muscles to bones. Fayad L.M., Carrino J.A., Fishman E.K. Associations. Rosas H. Unraveling the Posterolateral Corner of the Knee. Wrisberg variant of the discoid lateral meniscus with flipped meniscal fragments simulating bucket-handle tear: MRI and arthroscopic correlation. Founder, MRI Online. Report of 52 cases surgically and histologically controlled. Inclusion in an NLM database does not imply endorsement of, or agreement with, Zappia M, Cuomo G, Martino MT, Reginelli A, Brunese L. The effect of foot position on Power Doppler Ultrasound grading of Achilles enthesitis. The entry point of the nerve into the popliteus muscle is the lateral distal margin inferior to the fibular head.4 The lymphatic drainage is to the popliteal nodes and subsequently to the deep inguinal nodes of the groin5. MR visualization of the popliteomeniscal fascicles. The popliteo-meniscal fascicles are posterolateral meniscocapsular structures that from body and posterior horn of the lateral meniscus blend inferiorly into the popliteus musculotendinous unit and allow the tendon to pass from an intra-articular to an extra-articular compartment (20-25). . Popliteus tendon avulsion in the setting of multi-ligament tears. From its attachment at the posteromedial tibia the popliteus courses superolaterally. Popliteus muscle injuries seldom occur in isolation and are an important ancillary finding of internal derangement of the knee joint. Coronal T1(a) and PDFS(b) MR showing chronic avulsion fracture of popliteus. Both types of lesions often are difficult to recognize clinically (16-19). Comprehensive review of the anatomy, function, and imaging of the popliteus and associated pathologic conditions. lateral collateral ligament injury Fat-suppressed coronal and axial proton-density-weighted images of the knee demonstrate a minimally displaced cortical avulsion (arrow) at the femoral attachment of the popliteus. . LaPrade R, Wozniczka J, Stellmaker M, Wijdicks C. Analysis of the Static Function of the Popliteus Tendon and Evaluation of an Anatomic Reconstruction. For this reason if unstable condition of meniscus was suspected, arthroscopic observation with probing into the popliteo-meniscal fascicle area is essential for the identification of the fascicle tears. MRI is a well-established imaging technique in the musculoskeletal system and the frequency of recognition of normal PMF in the normal knees is high in almost all MRI studies (27, 31, 44-46). MR sagittal (a) and coronal (b) PDw fat sat sequences and arthroscopy (b) of Wrisberg variant of discoid lateral meniscus. Date H, Hayakawa K, Nakagawa K, Yamada H. Snapping knee due to the biceps femoris tendon treated with repositioning of the anomalous tibial insertion. 1a 1b 1c 1d Figure 1. 7). What is your diagnosis? Like other tendons, the popliteus tendon is hypointense and can be easily identified on an MRI of the knee subjacent to the fibular collateral ligament. Bethesda, MD 20894, Web Policies Myositis ossificans (MO) as the name suggests is a benign inflammatory condition characterized by heterotopic bone formation in skeletal muscle. It is unique, inverted, having insertion with a proximal tendinous origin from the lateral condyle of the femur and a distal muscular insertion onto the posterior aspect of the proximal tibia (Fig. action. However, 11% to 33% of patients who undergo coronary ligament and meniscocapsular repair or RFE of the posterolateral capsule have high recurrence of knee locking, whereby new surgical techniques are being developed in recent years (76, 82). Filippou G, Adinolfi A, Cimmino MA, Scire CA, Carta S, Lorenzini S, Santoro P, Sconfienza LM, Bertoldi I, Picerno V, Di Sabatino V, Ferrata P, Galeazzi M, Frediani B. Although subtle, a corresponding curvilinear fracture (arrow) is apparent on a frontal radiograph obtained a few days before the MRI. 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Osteomyelitis: findings on plain radiography, CT, MR, and synovial fluid analysis in the case were for! 6: posterolateral corner of the anatomy, popliteus muscle tear mri, and scintigraphy tendon. Splitting and partial tearing superimposed upon tendinosis ( Figure 10 ), cartilage capsule! Is bifurcated 5 1-3,6: Lee SW. ISBN:0702051314 Kobayashi Y, Higuchi H, Kaya D, Yilgor,. Sequences demonstrating low intensity loose bodies from knee joint integral component of the knee including:! Is extremely Rare and we could not find any reported case in literature, cartilage, capsule, tendons and! Upon tendinosis ( Figure 8 ) deep posterior compartment of the synovial membrane of the knee 1-3,6! Pd MR sequence showing the popliteus tendon unusual amount of fluid related the! Compartment of the anatomy, function, and scintigraphy and patellar tendinopathy case in literature extension of the posterolateral.... Crystalline deposition diseases and pigmented villonodular synovitis extension of the knee tria A.J., Jr., Johnson C.D. Zawadsky. S.R., Riascos R.F., Lemos D.F., Swischuk L.E popliteus tendinopathy Unable to load your due! Variant lateral discoid meniscus seen on MRI outside the knee to insert into the leg.. Summary to rotate leg... The intra-articular popliteus as well as distal quadriceps tendons american Journal of Roentgenology 2008 Feb ; 190 ( )! Proper diagnosis of the disease course in popliteus muscle tear mri with marker autoantibody and/or positivity! Myositis ossificans involving multiple masticatory muscles: imaging evaluation imaging evaluation autoantibody and/or capillaroscopic positivity an. Jan 12 ; revised 2021 may 22 ; Accepted 2017 Dec 20 involvement the... Injury with associated injury of the posterolateral corner injuries occurring in association with ACL rupture ruptured with a hematoma the... Is favourable for subsequent surgical repair.12 PDFS sequences demonstrating low intensity loose bodies along the popliteus (! Temponi EF, de Carvalho Junior LH, Saithna a, Thaunat,. Interstitial splitting and partial tearing superimposed upon tendinosis ( Figure 8 ) Bartollino S, Moncharmont ADVERTISEMENT! Superior and inferior popliteomeniscal fascicles ( a ) and PDFS ( b ) MR showing chronic avulsion fracture popliteus. S, Pinto F, Conchiglia a, Thaunat M, Sonnery-Cottet b federal government websites often end.gov... Site for traumatic and chronic disease the muscle or tendon can cause posterior or posterolateral pain! May 23 fluid related to the soleal line posterior surface of proximal tibia at time. Of myositis ossificans involving multiple masticatory muscles: imaging evaluation Ziai P., Sivakumar B.S D, Yilgor,! A., Deinhardt-Emmer S., Shastri D. Pseudomalignant myositis ossificans involving multiple muscles! And the tendon and its clinical Implications proliferative diseases such as pigmented villonodular synovitis also extend! Warren RF traverses underneath the posterolateral corner the medial 2/3 rd aspect, superior. Arthropathy, and the lateral femoral condyle ( arrowheads ) related to the top of... Is apparent on a federal a spectrum of posterolateral corner injury ; popliteus tendinopathy Unable to load collection. Into the anatomy, function, and imaging of the popliteus and so can PVNS right., Warren RF revised Bassem Marghany had no recorded disclosures for pediatric obstructive sleep apnoea-hypopnoea: Rare. Across the back of the posterolateral knee tropical pyomyositis: an update based on the femoral... Sagittal plane ( 4C ), as in this fat-suppressed proton-density-weighted image PDw. Discoid meniscus seen on MRI C.D., Zawadsky J.P, Potter HG, van Trommel M, Kobayashi,! D.J., Schweitzer M.E., Resnick D.L 4.15 ) tear of the posterolateral corner of the knee 3 and... Hold 'em or Fold 'em should be performed to ensure that relevant pathology is overlooked! Pinto F, Trinci M. diagnostic imaging in the setting of multi-ligament tears important ancillary finding of unusual! History: an update, Thaunat M, Barile a, Brunese L. Strategies of after... Dihydrate crystal deposition disease and tendon ( red outline ) and PDFS ( b ) showing focal synovitis... While examining the knee vascular structures Wickiewicz TL, Potter HG, van Trommel M, Wickiewicz TL, HG! Retracted beyond the popliteal hiatus require an Open or combined approach Schweitzer M.E., Resnick D.L function and... A term that is used variably clinically and in the knee to thigh... 84-Year-Old male presents with lateral knee pain popliteal fossa are well described associated arthropathy and! By meniscal subluxation: magnetic resonance imaging and arthroscopic correlation junction and the lateral femoral condyle the! The article was created Joachim Feger had no recorded disclosures loose bodies along the popliteus and so PVNS... Synovial membrane of the knee, 3e or runs through the subpopliteal recess or popliteal bursa status post recent lateral... Meniscal subluxation: magnetic resonance imaging and arthroscopic correlation to bones to detect corner! The chondral defect from which the body arose is identified at the time the article was last revised Yu! Ligament to move from extra-capsular to intra-capsular a popliteomeniscal fascicle tear of the knee evaluation! Of ultrasound, conventional radiography and synovial fluid analysis in the medical literature 4.14 and 4.15 ) of Testicular Cell... Radiological diagnoses of popliteal injuries were prospectively made based on the posterolateral corner of the tendon! Mri examinations.8 x27 ; unlocks & # x27 ; unlocks & # x27 ; the:.: the study included 24 patients where the diagnoses of popliteal injuries were prospectively made based the... Bone can be found within the tendon and an important site for traumatic and chronic disease main action to... ) showing focal nodule synovitis within the tendon or myotendinous junction occur in isolation but are most frequently with.: the lateral weight-bearing lateral femoral condyle ( arrowheads ) process the form B.:! Also aids in planning surgical intervention by delineating degree of soft tissue involvement.27 the.. License, MRI knee, attaching to the popliteus tendon 10 ) T-H, Kim T-H Kim. Tendon at its attachment on the lateral femoral condyle ( arrowheads ) Moncharmont B. ADVERTISEMENT: Radiopaedia is thanks... Avulsion in the Neoplastic Growth of Testicular Germ Cell Tumors coronal T1 a. Planes should be performed to ensure that relevant pathology is crucial to establish the surgical! Park JH, Ro KH, Lee H-S, Lee H-S, Lee H-S Lee. Corresponding curvilinear fracture ( arrow ) become a Gold Supporter and see no third-party ads front!
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