Rosemeyer B, Stürz H
Arch Orthop Unfallchir. 1977 Dec 27;90(3):299-313. doi: 10.1007/BF00415484.
By means of electromyographic evaluation we investigated the function of the rectus femoris, the vastus medialis, the tibialis anterior and the triceps muscle. The effects of immobilisation in above or below knee PoP were investigated with view to the muscular activity in walking and the effect of the immobilization in isometric exercises. The results are discussed. The vastus medialis can only be activated very poorly in a PoP and is not inervated at all during gait. The functional activity of the triceps is reduced markedly in either above or below knee PoP. In knee movement this muscle starts to be activated only over 90 degrees of flexion. The results suggest that an above knee PoP is sufficient to immobilise defects of the quadriceps and its tendon. Defects of the triceps and its tendon seem not necessarily to request an above knee PoP for immobilization. This case has however the advantage to decrease the danger of unexpected knee movements followed by a reflectoric muscle contraction. Its force could be greater than the stability of the repaired tendon.
通过肌电图评估，我们研究了股直肌、股内侧肌、胫骨前肌和三头肌的功能。针对膝上或膝下管型石膏固定对行走时肌肉活动的影响以及等长运动中固定的效果进行了研究，并对结果进行了讨论。在管型石膏固定中，股内侧肌的激活非常差，在步态期间完全没有神经支配。在膝上或膝下管型石膏固定中，三头肌的功能活动均明显降低。在膝关节运动时，该肌肉仅在屈曲超过90度时才开始被激活。结果表明，膝上管型石膏足以固定股四头肌及其肌腱的缺损。三头肌及其肌腱的缺损似乎不一定需要膝上管型石膏来固定。然而，这种情况的优点是降低了意外膝关节运动随后反射性肌肉收缩的风险。其力量可能大于修复肌腱的稳定性。
