Wojtys E M, Huston L J
MedSport University of Michigan, Ann Arbor 48106.
Am J Sports Med. 1994 Jan-Feb;22(1):89-104. doi: 10.1177/036354659402200116.
The neuromuscular function of the lower extremity in 40 normal and 100 anterior cruciate ligament-deficient volunteers was evaluated by physical examination, KT-1000 arthrometer measurements, isokinetic strength and endurance testing, subjective functional assessment, and an anterior tibial translation stress test. A specially designed apparatus delivered an anteriorly directed step force to the posterior aspect of the leg while anterior tibial translation was monitored and electromyographic signals were recorded at the medial and lateral quadriceps, medial and lateral hamstrings, and gastrocnemius muscles. Testing was done at 30 degrees of knee flexion with the foot fixed to a scale to monitor weightbearing, while the tibia remained unconstrained. Results indicate that muscle timing and recruitment order in response to anterior tibial translation are affected by anterior cruciate ligament injury. These alterations in muscle performance change with time from injury, correlate with an individual's physical activity level, affect subjective functional parameters, and are directly related to the degree of dynamic anterior tibial laxity seen with stress testing.
通过体格检查、KT-1000关节测量仪测量、等速肌力和耐力测试、主观功能评估以及前交叉韧带平移应力测试，对40名正常志愿者和100名前交叉韧带损伤志愿者的下肢神经肌肉功能进行了评估。一种专门设计的装置向小腿后方施加向前的阶跃力，同时监测胫骨前移情况，并记录股四头肌内侧和外侧、腘绳肌内侧和外侧以及腓肠肌的肌电信号。测试在膝关节屈曲30度时进行，足部固定在秤上以监测负重，而胫骨保持不受约束。结果表明，前交叉韧带损伤会影响肌肉对胫骨前移的反应时机和募集顺序。这些肌肉性能的改变随受伤时间而变化，与个体的身体活动水平相关，影响主观功能参数，并且与应力测试中观察到的动态胫骨前移程度直接相关。
