Shirakura K, Kato K, Udagawa E
Department of Orthopaedic Surgery, Gunma University School of Medicine, Japan.
Am J Sports Med. 1992 Nov-Dec;20(6):754-60. doi: 10.1177/036354659202000620.
The torques of the quadriceps muscle in patients with cruciate ligament injuries were evaluated under isokinetic contraction. There were 30 patients with anterior cruciate ligament injuries, 19 with posterior cruciate ligament injuries, and 30 controls. The torques of concentric and eccentric contractions in anterior cruciate ligament-injured knees showed a significant difference from those in the uninjured sides at extension angles of less than 45 degrees, yet the values of the peak torques for concentric and eccentric contractions were the same as those for the uninjured sides. The torques of concentric and eccentric contractions in posterior cruciate ligament-injured knees showed a significant difference from the uninjured sides at flexion angles of more than 36 degrees. The peak torques for concentric and eccentric contraction also showed a significant difference from the uninjured sides. The concentric and eccentric peak torque angles of the injured knees were similar to those of the uninjured sides in all subjects. The ratios of eccentric to concentric peak torque of the contralateral knees in the anterior cruciate ligament-injured groups did not show a significant difference from those of the controls. The evaluation of the biomechanical change in these categories is of great advantage in determining proper methods of treatment and rehabilitation.
在等速收缩条件下评估了交叉韧带损伤患者股四头肌的扭矩。有30例前交叉韧带损伤患者、19例后交叉韧带损伤患者和30例对照者。在前交叉韧带损伤的膝关节中，在伸展角度小于45度时，向心收缩和离心收缩的扭矩与未受伤侧相比有显著差异，但向心收缩和离心收缩的峰值扭矩值与未受伤侧相同。在后交叉韧带损伤的膝关节中，在屈曲角度大于36度时，向心收缩和离心收缩的扭矩与未受伤侧有显著差异。向心收缩和离心收缩的峰值扭矩与未受伤侧也有显著差异。在所有受试者中，受伤膝关节的向心和离心峰值扭矩角度与未受伤侧相似。前交叉韧带损伤组对侧膝关节的离心与向心峰值扭矩之比与对照组相比无显著差异。对这些类别的生物力学变化进行评估，对确定合适的治疗和康复方法具有很大优势。
