Free bone fragments are associated with the development of heterotopic ossification after hemiarthroplasty for femoral neck fracture: a retrospective observational study.
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引用次数: 0
Abstract
Purpose: Heterotopic ossification (HO) can occur after hemiarthroplasty (HA) for femoral neck fractures (FNF). This study aimed to investigate the frequency and factors contributing to the development of HO after HA.
Methods: The study included data from 92 of 183 patients (26 male and 66 female) who sustained FNF and underwent HA between April 2019 and January 2022. HO was identified on postoperative radiographic images. Patient background, operative duration, blood loss, and presence of free bone fragments immediately after surgery were compared between the HO and non-HO groups. Statistical analyses included the independent-sample t-test for continuous variables and the chi-squared test for categorical variables. A multivariate logistic regression analysis was performed using HO as an objective variable.
Results: HO occurred in 50 of the 92 (54%) patients. There were no statistically significant differences in patient backgrounds. Univariate analysis revealed significantly longer mean operative duration and greater blood loss in the HO group. Free bone fragments in the immediate postoperative period were observed in 29 of 50 (58%) patients in the HO group and in 3 of 42 (7.1%) patients in the non-HO group, a statistically significant difference. Logistic regression analysis revealed that the presence of free bone fragments was an independent explanatory factor for HO development.
Conclusion: The presence of free bone fragments immediately after surgery may be significantly associated with the development of HO. Therefore, it is necessary to sufficiently remove such fragments during surgery because they may trigger HO.
目的：股骨颈骨折（FNF）半关节置换术（HA）后可能发生异位骨化（HO）。本研究旨在探讨股骨颈半关节成形术（HA）后发生异位骨化的频率和因素：研究纳入了在2019年4月至2022年1月期间接受HA手术的183名股骨颈骨折患者（男性26人，女性66人）中92人的数据。HO在术后放射影像中被识别。对HO组和非HO组的患者背景、手术时间、失血量以及术后是否立即出现游离骨碎片进行了比较。统计分析包括连续变量的独立样本 t 检验和分类变量的卡方检验。以HO为客观变量进行了多变量逻辑回归分析：92例患者中有50例（54%）出现HO。患者背景差异无统计学意义。单变量分析显示，HO 组的平均手术时间明显更长，失血量更多。在术后即刻观察到游离骨碎片的患者中，HO 组 50 人中有 29 人（58%），非 HO 组 42 人中有 3 人（7.1%），差异有统计学意义。逻辑回归分析显示，游离骨碎片的存在是HO发生的一个独立解释因素：结论：术后立即出现游离骨碎片可能与 HO 的发生有显著相关性。结论：手术后立即出现游离骨碎片可能与 HO 的发生有明显关系，因此在手术过程中必须充分清除这些碎片，因为它们可能引发 HO。
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