Department of Medical Informatics and Image Analysis, University of Aalborg, Aalborg, Denmark.
J Electromyogr Kinesiol. 1991 Sep;1(3):209-17. doi: 10.1016/1050-6411(91)90036-5.
We present findings on the way in which to use electromyographic (EMG) measurements from muscles acting on the knee in planning rehabilitation of subjects after rupture of anterior cruciate ligament (ACL). ACL subjects demonstrated an earlier recruitment and a tendency to prolonged activity in muscles around the deficient knee as compared with a control group. Especially the hamstring lateralis and the gastrocnemius medialis (GM) muscles showed an earlier EMG onset and a longer EMG burst duration. The clinical relevance of the EMG findings was assessed by comparing the muscle coordination and relative levels of activity between a functionally excellent/good and a functionally poor ACL patient group. Significant differences between the two groups were noted in EMG onset and burst duration of the GM muscle. A rehabilitation program based on the EMG findings from the GM muscle was designed. In this program, the ACL subjects with poor stability were trained to change the EMG activity of the gastrocnemius muscles according to the recruitment pattern of the good/excellent ACL-group. We were able to train the subjects to change their muscle recruitment and to improve their knee stability. The stability of the knee joint depends on the stiffness of the muscles and ligaments around and within the knee. We discuss the importance of the gastrocnemius muscles with regard to knee joint stiffness.
我们介绍了一种利用作用于膝关节的肌肉肌电图（EMG）测量值来规划前交叉韧带（ACL）撕裂后患者康复的方法。与对照组相比，ACL 患者的肌肉在膝关节缺陷周围表现出更早的募集和更长时间的活动趋势。特别是股二头肌外侧肌和内侧腓肠肌（GM）肌肉表现出更早的 EMG 起始和更长的 EMG 爆发持续时间。通过比较功能优秀/良好和功能较差的 ACL 患者组之间的肌肉协调和相对活动水平，评估了 EMG 结果的临床相关性。GM 肌肉的 EMG 起始和爆发持续时间在两组之间存在显著差异。根据 GM 肌肉的 EMG 发现设计了一个康复计划。在这个计划中，对稳定性较差的 ACL 患者进行训练，以根据良好/优秀 ACL 组的募集模式改变腓肠肌的 EMG 活动。我们能够训练患者改变他们的肌肉募集，并改善他们的膝关节稳定性。膝关节的稳定性取决于膝关节周围和内部的肌肉和韧带的刚度。我们讨论了腓肠肌对膝关节刚度的重要性。
