Objective:

The primary aim was to evaluate the long-term follow-up of Collum Femoris Preserving (CFP) stem, specifically focusing on stem survivorship, complications, as well as on clinical and radiological results. The secondary study objective is an age-based sub-analysis (<65 years vs. ⩾65 years) of long-term results.

Materials and methods:

We performed a retrospective analysis of patients who underwent CFP implantation between 1997 and 2009. A total of 311 patients (342 hips) were included with a mean follow-up of 15.8 ± 2.2 (range 11–24) years. 2 age groups were analysed: Group-Y (age <65) and Group-E (age ⩾65). Group-Y included 182 hips (mean follow-up 16.3 ± 4.2 years), whereas Group-E included 160 hips (mean follow-up 15.5 ± 3.7 years). Clinical (HHS, OHS and VAS) and radiological data were obtained at final follow-up. Any complications, reoperations, prosthetic components revisions and stem revisions were analysed.

Results:

According to HSS score, 95% of patients reported excellent/good results (95.6% Group-Y vs. 94.4% Group-E) with an overall stem survival rate of 93.3% (94% Group-Y vs. 92.5% Group-E; p = 0.37). Overall, 87% of stem revisions were performed with primary stems. The rate of prosthetic components revision was 9.9 % (9.9% in Group-Y vs. 10% in Group-E; p = 1). The reoperation rate was 10.8% (11.5% in Group-Y vs. 10.0% in Group-E; p = 0.73).

Conclusions:

The CFP stem provides good clinical and radiological long-term results with low rate of complications in both young and elderly patients. No significant difference in stem revision and reoperation rates was observed between the 2 groups. Both in elderly and young patients, CFP stem allows revisions to be performed with primary stems.

中文翻译：

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24 年单中心保留股骨骨柄的经验：年轻人和老年人群的临床和放射学结果

客观的：

主要目的是评估股骨颈保留 (CFP) 股骨柄的长期随访，特别关注股骨柄的存活率、并发症以及临床和放射学结果。次要研究目标是对长期结果进行基于年龄的子分析（<65 岁 vs. 65 岁）。

材料和方法：

我们对 1997 年至 2009 年间接受 CFP 植入的患者进行了回顾性分析。共纳入 311 名患者（342 髋），平均随访时间为 15.8 ± 2.2（范围 11-24）年。分析了 2 个年龄组：Y 组（年龄 <65 岁）和 E 组（年龄65）。Y 组包括 182 髋（平均随访 16.3 ± 4.2 年），而 E 组包括 160 髋（平均随访 15.5 ± 3.7 年）。在最终随访时获得临床（HHS、OHS 和 VAS）和放射学数据。分析了任何并发症、再手术、假体组件翻修和假体翻修。

结果：

根据 HSS 评分，95% 的患者报告了优异/良好的结果（95.6% 组-Y 对 94.4% 组-E），总茎干存活率为 93.3%（94% 组-Y 对 92.5% 组-E ; p  = 0.37)。总体而言，87% 的假体翻修是使用原发性假体进行的。假体组件的翻修率为 9.9%（Y 组 9.9%，E 组 10%；p  = 1）。再手术率为 10.8%（Y 组为 11.5%，E 组为 10.0%；p  = 0.73）。

结论：

CFP 茎提供良好的临床和放射学长期结果，在年轻和老年患者中并发症发生率低。两组间的假体翻修率和再手术率无显着差异。在老年和年轻患者中，CFP 柄允许对初级柄进行修正。