前交叉韧带重建术后关节镜下股部肌力测量

目的　观察自体中1/3 骨-髌韧带-骨为供区,重建前交叉韧带后对股部肌力的影响。方法　自体中1/3 骨-髌韧带-骨移植重建前交叉韧带术后1年,关节镜下再视观察到无膝内紊乱的患者23 例;男9 例,女14 例。平均年龄为20.8岁。所有患者在关节镜再视术前使用MyretRZ-450型CybexⅡ等速肌肉功能测试器,对患侧和健侧进行股四头肌和腘绳肌的等长(60°和90°)和等速(60°/s和180°/s)肌力测定。结果　自体中1/3骨-髌韧带-骨做为供区,重建前交叉韧带之侧别的股四头肌肌力比健侧的股四头肌肌力明显降低(P< 0.01)。而获取自体中1/3 骨-髌韧带-骨移植后,对腘绳肌肌力则无影响(P> 0.05)。结论　获取自体中1/3 骨-髌韧带-骨移植重建前交叉韧带后,可严重降低股四头肌肌力

MEASUREMENT OF STRENGTH OF THIGH MUSCLES THROUGH ARTHROSCOPE AFTER RECON STRUCTION OF ANTERIOR CRUCIATE LIGAMENT

Objective To observe the strength of thigh muscles after reconstruction of anterior cruciate ligament by autogenous bone patellar tendon bone graft.Methods Twenty three patients, 9 males and 14 females, were followed up one year after reconstruction of the anterior cruciate ligament with autogenous bone patellar tendon bone graft.Through arthroscope,no intra articular derangement was found.The strengths of isometric and isotonic contractions of the quadri ceps and the hamstrings muscles of the affected and contralateral thighs were recorded. Results The donor side for autogenous bone patellar tendon bone graft showed significant decrease ( P <0.01), but no effect on that of the hamstrings muscle( P >0.05). Conclusion To reconstruct the anterior cruciate ligament,harvest of the bone patellar tendon bone graft as a reparative material may markedly lower the strength of the quadriceps femoris muscle.