膝前交叉韧带损伤及重建术后的等张肌力评定

目的:运用等张肌力测定系统对膝前交叉韧带(ACL)断裂患者及重建术后患者进行肌力评定,了解其变化规律,指导术后康复治疗。方法:膝ACL断裂患者15例,膝ACL重建术后康复3个月患者20例,术后康复12个月患者20例。使用EN-TreeMExplosivepulley等张肌力测试系统测试双侧伸、屈肌肌力。对照比较各项肌力参数。结果:膝ACL断裂后患膝伸肌及屈肌最大输出功率、最大收缩速率、最大力量较健侧有显著差异(P<0.05);疲劳系数无显著差异(P>0.05)。术后康复3个月屈肌肌力大部分参数与健侧无显著差异;伸肌除耐力外,各项参数均有显著差异(P<0.05)。术后康复12个月患膝伸、屈肌肌力大部分参数与健侧无显著差异。结论:等张肌力测定可以提供多项量化的肌力参数,是一项实用的功能性肌力评定方法。膝ACL断裂后膝关节屈伸肌力下降,重建术后经康复治疗屈肌肌力首先恢复,伸肌于12个月逐渐恢复。

Isotonic muscle strength assessment in the injury of the anterior cruciate ligament and post reconstruction operative rehabilitation

Objective:To evaluate isotonic muscle strength assessment in tearing of th e anterior cruciate ligament(ACL)and post reconstructive operation rehabilitatio n.Method:15patients of ACL injury.20patients with rehabilitation treatment3mont hs post ACL reconstruction with autogenous semitendinosus and gracilis tendon an d another20patients after the operation for12months were assessed done with EN-T ree M Explosive pulley2000(Enraf-Nonius)in both legs.The indexes were treated statistically statisticly.Result:The peak power,peak velocity and peak force i n the affected leg were obviously decrease than in the health leg(P<0.05)in th e ACL injuried patients,but the fatigue index have no significant differences.In the3months group,the most parameter of knee flexion strength had no significant difference but strength of knee extension except the fatigue index had a signif icant difference(P<0.05).In the12months group the most parameter of knee exten sion and flexion strength had no significant differences.Conclusion:Providing w ith a series of parameters,isotonic muscle strength assessment characterize a pr actical and functional evaluation method.Muscle strength of the leg was obviousl y decrease after ACL tearing.The strength of knee flexion may recover after3mont hs postoperative rehabilitation and the strength of knee extension may recover a fter12th months.