Caritas Hospital, Bad Mergentheim, Germany.
Aesculap AG, Tuttlingen, Germany.
Arch Orthop Trauma Surg. 2024 Apr;144(4):1813-1820. doi: 10.1007/s00402-023-05191-4. Epub 2024 Jan 13.
The aim of this retrospective study was to analyze the clinical and functional outcome of a modular tapered revision hip stem after mid-term follow-up with a special focus on the length of the distal bicortical fixation of the cementless hip stem.
Follow-up examination was carried out for all patients with implantation of the Prevision hip stem between 2014 and 2019 to collect demographic, functional, and radiographic data.
44 patients with stem in situ were examined, and 61 patients could be included in the Kaplan-Meier survival analysis. Oxford's hip score was 37.3 at the mean follow-up of 4.0 years. Two hip stem revisions were performed due to periprosthetic infection, which resulted in a hip stem survival rate of 96.7% (CI: 87.4-99.1%) at the final follow-up of 7.5 years. No aseptic hip stem revision was required. The length of bicortical distal fixation was in the interquartile range of 6.8 to 9.0 cm, which was associated with good bone healing and a low rate of subsidence (4.5%). Implant-associated complications were observed in 10 cases (21.7%).
The modular revision hip stem provides promising results at medium-term follow-up, with satisfactory clinical and functional outcomes comparable to other modular revision hip stems. The presented length of bicortical distal fixation shows the practice of the study center and was associated with good implant survival, bone healing and radiological results.
Clinicaltrials.gov registration: NCT04833634 registered on April 6, 2021.
本回顾性研究的目的是分析一种模块化锥形翻修髋骨柄的临床和功能结果，特别关注无水泥髋骨柄的远端双皮质固定长度。
对 2014 年至 2019 年间植入 Prevision 髋骨柄的所有患者进行随访检查，以收集人口统计学、功能和影像学数据。
44 例患者的髋骨柄在位，61 例患者可纳入 Kaplan-Meier 生存分析。平均随访 4.0 年后，牛津髋关节评分（Oxford hip score）为 37.3。由于假体周围感染，进行了 2 例髋骨柄翻修，最终随访 7.5 年后，髋骨柄的生存率为 96.7%（CI：87.4-99.1%）。未发生无菌性髋骨柄翻修。双皮质远端固定长度的四分位距为 6.8-9.0cm，与良好的骨愈合和低沉降率（4.5%）相关。在 10 例（21.7%）患者中观察到与植入物相关的并发症。
在中期随访中，模块化翻修髋骨柄提供了有前途的结果，具有令人满意的临床和功能结果，与其他模块化翻修髋骨柄相当。所报告的双皮质远端固定长度反映了研究中心的实践，与良好的植入物存活率、骨愈合和影像学结果相关。
Clinicaltrials.gov 注册号：NCT04833634，于 2021 年 4 月 6 日注册。
