Gait perturbation response in chronic anterior cruciate ligament deficiency and repair
Gait perturbation response in chronic anterior cruciate ligament deficiency and repair
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DOI：
10.1016/s0268-0033(02)00182-1
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发表时间：
2003-02-01
影响因子：
1.8
通讯作者：
Lee, JH
中科院分区：
文献类型：
--
作者：
Ferber, R;Osternig, LR;Lee, JH
目标。目的：确定慢性前交叉韧带缺损和手术修复的受试者与健康对照组相比，在步态中对意外的前摄动的反应。10名慢性前交叉韧带缺损患者在重建手术前和术后3个月的步态测试，以及10名未受伤的对照组。前交叉韧带损伤个体在步态扰动时的反应和保持平衡的能力对于预防再损伤至关重要。没有研究调查过这些人在正常步态中对意外干扰的反应。利用能够平动的力板，在足跟撞击时引起了意想不到的向前扰动。在手术前，与健康对照相比，前交叉韧带受试者对扰动的反应表现出更大的膝关节伸肌力矩。手术后，与对照组相比，前十字韧带损伤的受试者表现出静止的膝关节位置和持续的膝关节伸肌力矩，以响应摄动。这些数据表明，慢性前交叉韧带缺陷的受试者严重依赖膝关节伸肌组织来防止因意外扰动而塌陷。同样的反应性反应在手术后3个月更加明显。
Objective. To determine how chronic anterior cruciate ligament deficient and surgically repaired subjects react to unexpected forward perturbations during gait as compared to healthy controls.Design. Gait testing of 10 chronic anterior cruciate ligament deficient subjects prior to and three months following reconstructive surgery, and 10 uninjured controls.Background. The ability of an anterior cruciate ligament injured individual to react and maintain equilibrium during gait perturbations is critical for the prevention of reinjury. No studies have investigated how these individuals respond to unexpected perturbations during normal gait.Methods. An unexpected forward perturbation was induced upon heel strike using a force plate capable of translational movement.Results. Prior to surgery, the anterior cruciate ligament subjects exhibited a greater knee extensor moment in response to the perturbation compared to healthy controls. Following surgery, the anterior cruciate ligament injured subjects exhibited a static knee position and a sustained knee extensor moment throughout stance in response to the perturbation as compared to controls.Conclusions. These data suggest that chronic anterior cruciate ligament deficient subjects rely heavily on knee extensor musculature to prevent collapse in response to an unexpected perturbation. This same reactive response was more pronounced 3 months following surgery.