There is increasing interest in improving activity after total hip arthroplasty (THA) and periacetabular osteotomy (PAO). The present study evaluated whether there were differences in the subjective and objective activity levels of THA and PAO patients at mean 12-year follow-up (range 4-20) and what factors influence the objective activity levels. THA and PAO patients (30 patients each; mean age: 66 and 63 years, respectively), who had undergone surgery for osteoarthritis due to acetabular dysplasia, were included. Patients were retrospectively matched based on age, gender, body mass index, follow-up duration, and preoperative University of California, Los Angeles activity score (UCLA score). Patients were surveyed for the subjective activity levels using the Oxford Hip Score and UCLA score. Objective activity levels (the number of steps, upright time, and the number of sit-to-stand transitions) were made using an accelerometer. There was no significant difference in subjective activity level between THA and PAO patients. The number of steps was significantly higher in PAO than in THA patients. Multivariable analyses revealed that THA and low Oxford Hip Score activities of daily living were negatively associated with the number of steps, that men and high UCLA score were negatively associated with upright time, and that high body mass index was negatively associated with sit-to-stand transitions in THA and PAO patients. This study suggested that although there was no difference in postoperative subjective activity level between THA and PAO patients, there was a difference in objective activity level. Providing guidance to these patients based on objective activity may lead to higher activity levels.

中文翻译：

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全髋关节置换术和髋臼周围截骨术后的客观活动水平和患者报告的结果：平均 12 年随访的回顾性匹配队列研究

人们对改善全髋关节置换术 (THA) 和髋臼周围截骨术 (PAO) 后的活动能力越来越感兴趣。本研究评估了 THA 和 PAO 患者在平均 12 年随访（范围 4-20）时的主观和客观活动水平是否存在差异，以及哪些因素影响客观活动水平。纳入因髋臼发育不良而接受骨关节炎手术的 THA 和 PAO 患者（各 30 名患者；平均年龄分别为 66 岁和 63 岁）。根据年龄、性别、体重指数、随访时间和术前加州大学洛杉矶分校活动评分（UCLA 评分）对患者进行回顾性匹配。使用牛津髋关节评分和加州大学洛杉矶分校评分对患者的主观活动水平进行调查。使用加速度计测量客观活动水平（步数、直立时间和从坐到站的转换次数）。 THA和PAO患者的主观活动水平无显着差异。 PAO 患者的步数明显高于 THA 患者。多变量分析显示，THA 和低牛津髋关节评分的日常生活活动与步数呈负相关，男性和高 UCLA 评分与直立时间呈负相关，高体重指数与坐姿负相关。 THA 和 PAO 患者的站立转变。本研究提示，尽管THA和PAO患者术后主观活动水平没有差异，但客观活动水平存在差异。根据客观活动为这些患者提供指导可能会导致更高的活动水平。