Morrissey M C, Brewster C E, Shields C L, Brown M
Am J Sports Med. 1985 Jan-Feb;13(1):40-5. doi: 10.1177/036354658501300107.
Immobilization of the knee after anterior cruciate ligament (ACL) reconstruction results in marked thigh atrophy and decrease in quadriceps strength that may prolong the rehabilitation program of the injured athlete. Fifteen male volunteers undergoing ACL reconstruction were divided into two groups, stimulation (during immobilization) and nonstimulation. Measurements of thigh circumference and isometric quadriceps strength were tested preoperatively, immediately after cessation of cast immobilization (6 weeks), and at 9 and 12 weeks postoperatively. The changes in circumference and strength between the first preoperative test and all subsequent tests were compared for statistical significance (Student's t-test, P less than 0.5) between the two groups. The decrease in quadriceps strength of the stimulation group during immobilization was significantly less than that of the nonstimulation group, although later differences between the two groups were not significant. There were no significant differences in thigh atrophy between the two groups. In conclusion, isometric quadriceps torque decreases resulting from immobilization can be significantly lessened by application of electrical stimulation during immobilization. Electrical stimulation to the quadriceps does not significantly alter thigh circumference changes that occur during immobilization.
前交叉韧带（ACL）重建术后膝关节制动会导致明显的大腿萎缩和股四头肌力量下降，这可能会延长受伤运动员的康复计划。15名接受ACL重建的男性志愿者被分为两组，即刺激组（制动期间）和非刺激组。在术前、停止石膏固定后即刻（6周）以及术后9周和12周测量大腿围度和股四头肌等长力量。比较两组在首次术前测试与所有后续测试之间围度和力量的变化，以确定统计学显著性（学生t检验，P<0.5）。尽管两组后期差异不显著，但制动期间刺激组股四头肌力量的下降明显小于非刺激组。两组之间的大腿萎缩情况无显著差异。总之，制动期间通过施加电刺激可显著减轻因制动导致的股四头肌等长扭矩下降。对股四头肌进行电刺激不会显著改变制动期间发生的大腿围度变化。
