Kamada Tomomi, Imai Hiroshi, Mahima Naohiko, Takeba Jun, Miyawaki Joji, Miura Hiromasa
Department of Bone and Joint Surgery, Ehime University Graduate School of Medicine, Shitukawa, Toon, Ehime, 791-0295, Japan.
Eur J Orthop Surg Traumatol. 2018 Apr;28(3):485-491. doi: 10.1007/s00590-017-2060-3. Epub 2017 Oct 12.
Successful reconstruction during total hip arthroplasty for acetabular bone defects remains challenging. The purpose of our study was to evaluate clinical and radiographic results and performed a survivorship analysis for patients with acetabular bone loss undergoing total hip arthroplasty (THA) or revision THA using Kerboull-type acetabular reinforcement device(KT plate). Additionally, some independent prognostic factors for radiographic failure were identified.
A retrospective cohort study was conducted. Thirty patients (36 hips) were available for follow-up examination between 1997 and 2012, with a mean follow-up period of 10 years. We evaluated clinical and radiographic results. The mean patient age at the time of the operation was 66 years.
Failure occurred in 6 cases, and further revisions were required for 2 hips. With failure for any reason as an endpoint, the cumulative survival at 10 years was 85%. Survival analysis at 10 years with failure as the endpoint revealed that the inclination angle of the KT plate ≤ 45° group showed higher survivorship than the inclination angle > 45° group (95.8 vs. 63.6%, P = 0.0047).
With a mean follow-up of 10 years, the clinical and radiographic outcomes were satisfactory. While this study group was small, the results suggest that prosthesis longevity may be improved by setting the inclination angle of this reinforcement device at ≤ 45°.
全髋关节置换术中髋臼骨缺损的成功重建仍然具有挑战性。我们研究的目的是评估临床和影像学结果，并对接受全髋关节置换术（THA）或使用Kerboull型髋臼增强装置（KT钢板）进行翻修THA的髋臼骨丢失患者进行生存分析。此外，还确定了一些影像学失败的独立预后因素。
进行了一项回顾性队列研究。1997年至2012年间有30例患者（36髋）可供随访检查，平均随访期为10年。我们评估了临床和影像学结果。手术时患者的平均年龄为66岁。
6例出现失败，2髋需要进一步翻修。以任何原因导致的失败为终点，10年时的累积生存率为85%。以失败为终点的10年生存分析显示，KT钢板倾斜角度≤45°组的生存率高于倾斜角度>45°组（95.8%对63.6%，P = 0.0047）。
平均随访10年，临床和影像学结果令人满意。虽然本研究组规模较小，但结果表明，将这种增强装置的倾斜角度设置为≤45°可能会提高假体的使用寿命。
