Morrissey Matthew C, Drechsler Wendy I, Morrissey Dylan, Knight Philippa R, Armstrong Paul W, McAuliffe Thomas B
Physiotherapy Division, GKT School of Biomedical Sciences, King's College London, Shepherd's House, Guy's Campus, London SE1 1UL, United Kingdom.
Phys Ther. 2002 Jan;82(1):35-43. doi: 10.1093/ptj/82.1.35.
Nondistally fixated (ie, what is often referred to as "open kinetic chain" [OKC]) knee extensor resistance training appears to have lost favor for some forms of rehabilitation due partly to concerns that this exercise will irritate the extensor mechanism. In this randomized, single-blind clinical trial, nondistally fixated versus distally fixated (ie, often called "closed kinetic chain" [CKC]) leg extensor training were compared for their effects on knee pain.
Forty-three patients recovering from anterior cruciate ligament (ACL) reconstruction surgery (34 male, 9 female; mean age=29 years, SD=7.9, range=16-54).
Knee pain was measured at 2 and 6 weeks after ACL reconstruction surgery using visual analog scales in a self-assessment questionnaire and during maximal isometric contractions of the knee extensors. Between test sessions, subjects trained 3 times per week using either OKC or CKC resistance of their knee and hip extensors as part of their physical therapy.
No differences in knee pain were found between the treatment groups.
Open kinetic chain and CKC leg extensor training in the early period after ACL reconstruction surgery do not differ in their immediate effects on anterior knee pain. Based on these findings, further studies are needed using different exercise dosages and patient groups.
非远端固定（即通常所说的“开放动力链”[OKC]）的膝关节伸展阻力训练，在某些康复形式中似乎已失宠，部分原因是担心这种运动会刺激伸肌机制。在这项随机、单盲临床试验中，比较了非远端固定与远端固定（即通常所说的“闭合动力链”[CKC]）腿部伸展训练对膝关节疼痛的影响。
43例接受前交叉韧带（ACL）重建手术康复的患者（男34例，女9例；平均年龄 = 29岁，标准差 = 7.9，范围 = 16 - 54岁）。
在ACL重建手术后2周和6周，使用视觉模拟量表，通过自我评估问卷以及在膝关节伸肌最大等长收缩期间测量膝关节疼痛。在测试期间，受试者作为物理治疗的一部分，每周使用OKC或CKC对其膝关节和髋关节伸肌进行3次阻力训练。
治疗组之间未发现膝关节疼痛有差异。
ACL重建手术后早期，开放动力链和CKC腿部伸展训练对膝关节前部疼痛的即时影响没有差异。基于这些发现，需要使用不同的运动剂量和患者群体进行进一步研究。
