Effect of Superior Placement of the Hip Center on Abductor Muscle Strength in Total Hip Arthroplasty
Effect of Superior Placement of the Hip Center on Abductor Muscle Strength in Total Hip Arthroplasty
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DOI：
10.1016/j.arth.2008.08.012
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发表时间：
2009-02-01
影响因子：
3.5
通讯作者：
Maeyama, Akira
中科院分区：
文献类型：
--
作者：
Kiyama, Takahiko;Naito, Masatoshi;Maeyama, Akira
我们评估了50例患者的100个肢体，他们接受了单侧原发性全髋关节置换术，对侧髋关节正常。50例患者按术后髋臼杯位置分为上下两组（上下两组）。采用改良Trendelenburg试验定性评价髋外展肌力量，手持式测力仪定量评价髋外展肌力量。计算重建侧与非手术侧归一化强度之比（强度比）。改良Trendelenburg试验在23例次优组中5例阳性，在27例次优组中11例阳性（P < 0.05）。优势组强度比劣势组降低7.7% （P < 0.01）。
We evaluated 100 limbs in 50 patients who had undergone unilateral primary total hip arthroplasty with a normal contralateral hip. The 50 patients were divided into 2 groups by postoperative acetabular cup position, specifically by inferior and superior placement (inferior and superior groups). Hip abductor muscle strength was evaluated qualitatively by the modified Trendelenburg test and quantitatively by handheld dynamometer. The ratio of normalized strength of the reconstruction side to that of the nonoperated side was calculated (strength ratio). The modified Trendelenburg test was positive in 5 of 23 patients in the inferior group and 11 of 27 in the Superior group (P < .05). The strength ratio of the superior group was decreased by 7.7% in comparison with that of the inferior group (P < .01).