Do component position and muscle strength affect the cup-head translation during gait after total hip arthroplasty?
Do component position and muscle strength affect the cup-head translation during gait after total hip arthroplasty?
复制标题
部件位置和肌肉力量是否会影响全髋关节置换术后步态中杯头的平移？
DOI：
10.1007/s00590-019-02443-1
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发表时间：
2019
影响因子：
1.7
通讯作者：
Nakashima Yasuharu
中科院分区：
文献类型：
--
作者：
Kiyohara Masato;Hamai Satoshi;Hara Daisuke;Fujiyoshi Daisuke;Harada Satoru;Kawaguchi Kenichi;Nakashima Yasuharu
本研究探讨在活体负重状态下，人工全髋关节置换术(THA)后，假体的位置或肌力是否会影响杯头平移。我们假设在步态中髋关节偏移量或外展肌力与杯头平移之间存在相关性。材料和方法我们前瞻性地评估了31例单侧非骨水泥型初次全髋关节置换术患者。在双侧髋关节正后位X线片上测量髋臼高度、杯柄偏移量和肢体长度差。用手持测力仪测量双侧肢体等长肌力。结果平均杯高为− 3.8 ± 5.1 mm，杯柄偏移量1.2 ± 5.2 mm/− 0.7 ± 7.7 mm，− 2.1 ± 5.2 mm。健侧髋外展肌/屈肌群和伸膝肌群的平均力量分别为健侧86% ± 18%/85% ± 17%和88% ± 17%。步态摆动期杯头平移平均为− 0.003 ± 0.31m m。多元回归分析未发现杯头平移的显著独立预测因素(p>； 0.05)。结论假体位置或肌力对初次全髋关节置换术后步态中的杯头平移无显著影响。
IntroductionThis study examined whether the component position or muscle strength affects the cup-head translation under in vivo weight-bearing conditions after total hip arthroplasty (THA). We hypothesized that there was a correlation between the hip offset or abductor strength and cup-head translation during gait.Materials and methodsWe prospectively evaluated 31 patients undergoing unilateral cementless primary THA. The cup height, cup/stem offset, and limb length discrepancy were measured on anterior–posterior bilateral hip radiographic images. The isometric muscle strength of the lower limbs was quantified using a handheld dynamometer. Continuous radiographic images were recorded during gait, and cup-head translation was analysed using a computer-assisted method.ResultsThe average cup height, cup/stem offset, and limb length discrepancy were − 3.8 ± 5.1 mm, 1.2 ± 5.2 mm/− 0.7 ± 7.7 mm, and − 2.1 ± 5.2 mm, respectively. The average hip abductor/flexor and knee extensor strength were 86% ± 18%/85% ± 17% and 88% ± 17% of the contralateral healthy hip, respectively. The average cup-head translation during swing phase of gait was − 0.003 ± 0.31 mm. Multiple regression analyses found no significant independent predictors of cup-head translation (p> 0.05).ConclusionsThe component position or muscle strength did not significantly influence cup-head translation during gait after well-positioned primary THA.