IntroductionIndividuals with acetabular dysplasia often report hip joint instability, pain, and poor hip‐related function. Periacetabular osteotomy (PAO) is a surgical procedure that aims to reposition the acetabulum to improve joint congruency and improve pain and function. We aimed to examine the influence of presurgery clinical measures on functional recovery following PAO and the associations among clinical outcomes after PAO.MethodsWe screened 49 potential participants, 28 were enrolled, and 23 completed both study visits (pre‐PAO and 6 months post‐PAO). We evaluated dynamometer‐measured hip and thigh strength, loading patterns during a squat and countermovement jump (CMJ), pain intensity, and device‐measured physical activity (PA) levels (light, moderate‐to‐vigorous PA [MVPA], and daily steps). We used linear regression models to examine the influence of muscle strength (peak torque; limb symmetry index [LSI]) and loading patterns before PAO on pain intensity and PA levels in individuals 6 months following PAO. Additionally, we used Pearson correlation coefficient to examine cross‐sectional associations among all variables 6 months following PAO.ResultsLower extremity muscle strength and loading patterns during the squat and CMJ before PAO did not predict pain intensity or device‐measured PA levels in individuals 6 months following PAO (p > 0.05). Six months following PAO, higher knee extensor LSI was associated with higher time spent in MVPA (r = 0.56; p = 0.016), higher hip abductor LSI was associated with both lower pain (r = 0.50; p = 0.036) and higher involved limb loading during the squat task (r = 0.59; p = 0.010). Lastly, higher hip flexor LSI was associated with higher CMJ takeoff involved limb loading (r = 0.52; p = 0.021) and higher involved hip extensor strength was associated with higher CMJ landing involved limb loading (r = 0.56; p = 0.012).ConclusionSix months after PAO, higher hip and thigh muscle strength and strength symmetry were associated with lower pain, higher PA levels, and greater normalized limb loading during dynamic movement tasks.

中文翻译：

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髋臼周围截骨术后 6 个月髋臼发育不良患者疼痛强度和体力活动水平的康复特异性预测因子


简介患有髋臼发育不良的人经常报告髋关节不稳定、疼痛和髋关节相关功能差。髋臼周围截骨术 (PAO) 是一种外科手术，旨在重新定位髋臼以改善关节一致性并改善疼痛和功能。我们的目的是检查术前临床措施对 PAO 后功能恢复的影响以及 PAO 后临床结果之间的关联。方法我们筛选了 49 名潜在参与者，其中 28 人入组，23 人完成了两次研究访视（PAO 前和 PAO 后 6 个月） ）。我们评估了测功机测量的臀部和大腿力量、深蹲和反向运动跳跃 (CMJ) 期间的负荷模式、疼痛强度和设备测量的体力活动 (PA) 水平（轻度、中度至剧烈 PA [MVPA] 和每日步骤）。我们使用线性回归模型来研究 PAO 前的肌肉力量（峰值扭矩；肢体对称指数 [LSI]）和负荷模式对 PAO 后 6 个月个体的疼痛强度和 PA 水平的影响。此外，我们使用 Pearson 相关系数来检查 PAO 后 6 个月所有变量之间的横断面关联。结果 PAO 前深蹲和 CMJ 期间的下肢肌肉力量和负荷模式不能预测 6 个月后个体的疼痛强度或设备测量的 PA 水平以下 PAO ( p > 0.05）。 PAO 后六个月，较高的膝关节伸肌 LSI 与较长的 MVPA 时间相关（ r = 0.56; p = 0.016），较高的髋关节外展肌 LSI 与较低的疼痛相关（ r = 0.50； p = 0.036）以及更高的涉及深蹲任务期间的肢体负荷（ r = 0.59; p = 0.010）。 最后，较高的髋屈肌 LSI 与较高的 CMJ 起跳相关，涉及肢体负荷（ r = 0.52; p = 0.021）并且较高的髋伸肌力量与较高的 CMJ 着陆涉及的肢体负荷相关（ r = 0.56; p = 0.012）。结论 PAO 后六个月，较高的髋部和大腿肌肉力量和力量对称性与动态运动任务期间较低的疼痛、较高的 PA 水平和较大的标准化肢体负荷相关。