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Knee torn retinaculum

Mehmet Oğuz Durakbaşa, Kerem Ulkü, Mehmet Nurullah Ermiş
Posterolateral knee dislocations are generally irreducible due to the interposition of the medial capsule and retinaculum. These injuries have a 'dimple sign' which shows the invagination of the tissues in the medial joint line. We present an unusual case of an open posterolateral traumatic knee dislocation (KD-4 [ACL/PCL/MCL/LCL-PLC torn] open knee dislocation) without a 'dimple sign'. Closed reduction attempts were unsuccessful. In surgery, it was found that the medial meniscus was detached from the meniscocapsular junction and entrapped in the joint...
2011: Acta Orthopaedica et Traumatologica Turcica
Kimmie L Bui, Hakan Ilaslan, Richard D Parker, Murali Sundaram
OBJECTIVES: Our objectives were to determine retrospectively the prevalence, patients' demographics, mechanism of injury, combination of torn ligaments, associated intra-articular and extra-articular injuries, fractures, bone bruises, femoral-tibial alignment and neurovascular complications of knee dislocations as evaluated by magnetic resonance (MR) imaging. MATERIALS AND METHODS: From 17,698 consecutive knee examinations by magnetic resonance imaging (MRI) over a 6-year period, 20 patients with knee dislocations were identified...
July 2008: Skeletal Radiology
A Panagopoulos, L van Niekerk, I K Triantafillopoulos
Recurrent dislocation, subluxation and functional instability due to patellofemoral pain might be present in 30 % to 60 % of patients managed non-operatively for posttraumatic patella instability. Disruption of the capsule, medial patella retinaculum and/or vastus medialis obliquus have been associated with recurrent patella instability but recently the medial patellofemoral ligament (MPFL) has been recognised as the most important ligamentous stabiliser preventing lateral dislocation of the patella. Many nonanatomical surgical techniques for the treatment of recurrent patellar dislocation have been described in the literature...
May 2008: International Journal of Sports Medicine
R Kaba, S Mashru, P Sooriakumaran
The medial patellofemoral ligament (MPFL) is a condensation of the medial capsule of the knee joint. In the past two decades dissection studies have shown that it extends from the superomedial border of the patella to the femoral epicondyle, at or immediately above the adductor tubercle. MRI and operative studies have revealed that it is almost invariably damaged by lateral patellofemoral dislocation. Current surgical management of such dislocations may involve imbricating the torn medial capsule and parapatellar retinaculum back onto the medial border of the patella...
2004: International Journal of Surgery
W Hackl, K P Benedetto, C Fink, R Sailer, M Rieger
Irreducible patellar dislocations are rare injuries, but those that do occur are mainly directed intra-articularly. In this case, a 53-year-old woman sustained a locked lateral patellar dislocation when falling from a chair. A preoperative CT-scan revealed bony avulsions at the insertion of the vastus medialis muscle, the medical retinaculum, and partial disruption of the ligamentum patellae from the apex patellae. Open reduction was necessary and the torn structures were reattached with anchor systems and sutures...
1999: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
R T Burks, S M Desio, K N Bachus, L Tyson, K Springer
This investigation was undertaken to identify the structures torn within the medial retinaculum and localize the injury site anatomically following acute lateral dislocation of the patella in a cadaver model. The patellae of 10 fresh-frozen cadavers were translated laterally 135% of the patella width on a universal testing instrument. Magnetic resonance imaging (MRI) was performed on all specimens prior to testing and immediately following testing. Anatomical dissection also was performed on the medial retinaculum following testing...
1998: American Journal of Knee Surgery
M T Lauterburg, P Segantini
In a retrospective study we analyzed the arthroscopic findings of 166 knee-arthroscopies performed in children and young people up to the age of 16 years. A sports related trauma was present in 54%, a traffic injury in 15% and in 11% an other casualty. In 4% the precise injury was not sure and 16% did not refer any injury. Among the sports injuries (n = 90) ski injuries were the most frequent with 30% of all, followed by gymnastic injuries in 28%, soccer in 25% and other indoor sport injuries in 12%. 57% of all arthroscopies presented a hemarthrosis...
1994: Schweizerische Zeitschrift Für Medizin und Traumatologie, Revue Suisse Pour Médecine et Traumatologie
J P Fulkerson, H R Gossling
Dissections of the fiber orientation and interconnections of the lateral knee retinacula in 23 cadaver knees and one fresh knee demonstrate a superficial, oblique retinacular ligament running from fascia lata to patella. Deep to this structure are a separate distinct transverse band to the patella, an epicondylopatellar and a patellotibial band. Awareness of these distinct structures should be helpful to the surgeon performing a lateral retinacular release. The lateral knee retinaculum is oriented longitudinally with the knee extended...
November 1980: Clinical Orthopaedics and related Research
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