一个高骑乘的骨是ACL重建后的步行过程中膝关节运动的特征
Marcus G Pandy1, Hans A Gray2, Padma N Ganapam1
1Department of Mechanical Engineering, University of Melbourne, Melbourne, Victoria, Australia.
概括
前交叉带重建 (ACLR) 后的膝盖运动显示了变化的骨关节和骨关节机制. 这些变化,包括更长的骨肌和高的骨,可能会增加骨关节炎的风险.
科学领域:
- 整形外科 整形外科 整形外科
- 生物力学 生物力学
- 运动医学 运动医学
背景情况:
- 在前交叉带重建 (ACLR) 后,对膝关节关节运动的准确测量,特别是带骨关节,是有限的.
- 了解ACLR后的步态机制对于优化患者的治疗结果和预防二次并发症至关重要.
研究的目的:
- 在经过ACLR的个体中,量化行走期间的六度自由度 (6-DOF) 骨和骨运动.
- 为了比较这些运动与他们未受伤的对侧膝盖和健康的对照个体.
- 为了研究改变膝盖动力学和解剖学变化之间的关系,如关节肌长度和关节高度.
主要方法:
- 利用双平面光学来捕捉在平行和下坡行走时骨关节和骨关节的6-DOF运动.
- 招募了15名ACLR参与者和10名健康对照者,在完整的步行周期中测量运动.
- 分析了动力学数据,骨肌长度,Insall-Salvati比率和关节接触点.
主要成果:
- 与对照组相比,ACLR和逆侧膝盖表现出较大的皮带上部转移 (4.4-5.6毫米),前部转移 (5.4-6.3毫米) 和较少的曲 (3.7°-7.0°).
- 在ACLR膝盖中,小腿外侧旋转 (3.4°-3.8°) 和前侧翻译 (2.6-3.0 mm) 增加.
- 在ACLR和逆侧膝关节观察到更长的关节肌 (8.9毫米),导致ACLR膝关节47%的高骑 (patella alta),与改变的三角关节接触 (7.6毫米高).
结论:
- 患有ACLR的个体在行走过程中表现出骨关节和骨关节动力学的显著变化,甚至在对侧四肢中持续存在.
- 较长的骨肌和由此产生的骨高层似乎是影响这些运动变化的关键因素.
- 在ACLR后改变的关节力学和接触模式可能会使个体易患关节骨关节炎的高发病率.
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