Ferrari Dudley A
Department of Orthopaedics and Rehabilitation, University of Massachusetts Memorial Health Care, Worcester, Massachusetts 01655, USA.
Arthroscopy. 2005 Jun;21(6):721-6. doi: 10.1016/j.arthro.2005.03.022.
In cases of posterolateral laxity with abnormally increased external rotation of the tibia, the arthroscopically visualized portion of the popliteal tendon can have a different appearance. The purpose of this study was to determine whether laxity at the nonvisualized femoral insertion of the popliteus tendon or the popliteal fibular ligament caused the altered appearance.
Fresh cadaveric selective cutting.
Ten cadaveric specimens with normal appearing popliteal tendon were examined arthroscopically. In 5 specimens, partial and complete detachment of the femoral insertion was performed and the appearance visualized arthroscopically. In 5 specimens, the popliteal fibular ligament was detached and the popliteal tendon visualized arthroscopically.
Laxity at the nonvisualized femoral insertion of the popliteus tendon leads to a different appearance of the arthroscopic view of the popliteal tendon. This altered appearance was determined by an intact popliteal fibular ligament. A different alternation occurs when the popliteal fibular ligament is resected.
Differences in the arthroscopic view of the popliteal tendon may be important clues to the cause of increased external rotation of the tibia.
This study presents a method for arthroscopists to observe and evaluate the popliteus tendon and the posterior lateral corner of the knee in relation to external rotation of the tibia in symptomatic and asymptomatic posterior lateral rotation.
在存在后外侧松弛且胫骨外旋异常增加的情况下，经关节镜观察到的腘肌腱部分可能会有不同表现。本研究的目的是确定腘肌腱在未观察到的股骨附着点或腘腓韧带处的松弛是否导致了这种外观改变。
新鲜尸体选择性切割。
对10个腘肌腱外观正常的尸体标本进行关节镜检查。在5个标本中，进行股骨附着点的部分和完全分离，并通过关节镜观察其外观。在5个标本中，分离腘腓韧带并通过关节镜观察腘肌腱。
腘肌腱在未观察到的股骨附着点处的松弛导致关节镜下腘肌腱的外观不同。这种外观改变是由完整的腘腓韧带决定的。当切除腘腓韧带时会出现不同的改变。
腘肌腱关节镜视图的差异可能是胫骨外旋增加原因的重要线索。
本研究为关节镜医师提供了一种方法，用于观察和评估腘肌腱以及膝关节后外侧角与有症状和无症状后外侧旋转时胫骨外旋的关系。
