Femoroacetabular impingement syndrome (FAIS) has been associated with osteitis pubis; however, it is still unclear whether hip dysplasia is associated with osteitis pubis. This study aimed to investigate (i) the incidence of pubic bone marrow edema (BME) on magnetic resonance imaging in symptomatic patients with FAIS, borderline developmental dysplasia of the hip (BDDH) and developmental dysplasia of the hip (DDH) undergoing hip arthroscopic surgery with labral preservation and (ii) the demographic and radiographic factors associated with pubic BME. A total of 259 symptomatic patients undergoing hip arthroscopic surgery between July 2016 and April 2019 were retrospectively reviewed and divided into three groups: FAIS (180 patients), BDDH (29 patients) and DDH (50 patients). Diffuse changes in the pubic bone adjacent to the pubic symphysis were labeled pubic BME, and the prevalence of their occurrence was examined. Multivariate logistic regression analysis was performed to identify factors involved in pubic BME, and odds ratios (ORs) for relevant factors were calculated. There was no significant difference in the prevalence of pubic BME among the three groups (20 [11.1%] of 180 FAIS patients, 6 [20.6%] of 29 BDDH patients and 7 [14%] of 50 DDH patients, P = 0.325). Multivariate logistic regression analysis showed that acetabular coverage was not associated with pubic BME, whereas younger age and greater alpha angle were still independent associated factors [age ≤26 years (OR, 65.7) and alpha angle ≥73.5° (OR, 4.79)]. Determining the possible association of osteitis pubis with cam impingement in dysplastic hips may provide insights toward a more accurate understanding of its pathophysiology.

中文翻译：

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股骨髋臼撞击和髋关节发育不良中耻骨骨髓水肿的患病率及危险因素

股骨髋臼撞击综合征（FAIS）与耻骨骨炎有关；然而，仍不清楚髋关节发育不良是否与耻骨骨炎有关。本研究旨在调查 (i) 有症状的 FAIS、临界发育性髋关节发育不良 (BDDH) 和髋关节发育不良 (DDH) 患者接受髋关节镜手术后耻骨骨髓水肿 (BME) 的磁共振成像发生率保留盂唇和（ii）与耻骨 BME 相关的人口统计学和放射学因素。回顾性分析了2016年7月至2019年4月期间接受髋关节镜手术的259例有症状患者，分为三组：FAIS（180例）、BDDH（29例）和DDH（50例）。耻骨联合附近耻骨的弥漫性变化被标记为耻骨 BME，并检查了它们的发生率。进行多变量逻辑回归分析以确定涉及耻骨BME的因素，并计算相关因素的优势比（ORs）。三组中耻骨 BME 的患病率无显着差异（180 名 FAIS 患者中的 20 名 [11.1%]、29 名 BDDH 患者中的 6 名 [20.6%] 和 50 名 DDH 患者中的 7 名 [14%]，P = 0.325） . 多因素logistic回归分析显示，髋臼覆盖与耻骨BME无关，而年轻和更大的α角仍然是独立的相关因素[年龄≤26岁（OR，65.7）和α角≥73.5°（OR，4.79）]。