Department of Trauma and Orthopaedics, Derriford Hospital, Plymouth, United Kingdom; Department of Trauma and Orthopaedics, El-Hadra Hospital, Alexandria University, Alexandria, Egypt.
Department of Orthopaedic surgery, King's Mill Hospital, Nottinghamshire, United Kingdom.
J Arthroplasty. 2018 Aug;33(8):2566-2570. doi: 10.1016/j.arth.2018.03.040. Epub 2018 Mar 27.
The use of highly porous acetabular components has shown to produce good results in revision acetabular surgery. Their surface characteristics enhance initial fixation and bone ingrowth which are prerequisites for adequate osseointegration. The purpose of this study is to analyze the mid-term to long-term survival, clinical and radiological outcomes using the Tritanium cup (Stryker, Mahwah, NJ) in revision hip surgery.
This is a retrospective review of all patients who underwent acetabular revision surgery using "Tritanium revision cup" between April 2007 and November 2010 at our institution. Sixty-two patients were included with a mean age of 67.5 years (32-86). According to Paprosky classification, 10 patients had type I defect, 8 had type IIA, 27 had type IIB, 7 had type IIC, and 10 suffered from type IIIA defect. A Kaplan-Meier analysis was used to determine the survival of the cup. Functional outcomes were assessed using Oxford Hip Score. Plain radiographs were performed to assess implant fixation and osseointegration.
The acetabular cup aseptic survivorship was 98.4% at a mean follow-up of 87.6 months. The mean Oxford Hip Score improved from 14.5 (3-31) preoperatively to 38.5 (12-48) at the final follow-up. Two cups were revised (3.2%): 1 for aseptic loosening and 1 for infection.
Tritanium revision acetabular cup has shown excellent mid-term to long-term clinical and radiographic results with low failure rate and minimal complications. Longer term follow-up would be of value to assess the ongoing survival of this implant construct.
高多孔髋臼部件的使用已证明在翻修髋臼手术中能取得良好效果。其表面特性增强了初始固定和骨长入，这是充分骨整合的前提。本研究旨在分析使用 Tritanium 髋臼（Stryker，Mahwah，NJ）进行髋关节翻修手术的中期至长期生存率、临床和影像学结果。
这是对 2007 年 4 月至 2010 年 11 月在我院接受“Tritanium 翻修髋臼”翻修手术的所有患者进行的回顾性研究。共纳入 62 例患者，平均年龄 67.5 岁（32-86 岁）。根据 Paprosky 分类，10 例为Ⅰ型缺损，8 例为ⅡA型，27 例为ⅡB 型，7 例为ⅡC 型，10 例为ⅢA型缺损。采用 Kaplan-Meier 分析法确定髋臼杯的生存率。采用牛津髋关节评分评估功能结果。拍摄平片评估植入物固定和骨整合情况。
髋臼杯无菌生存率为 98.4%，平均随访 87.6 个月。牛津髋关节评分从术前的 14.5（3-31）平均提高到最后一次随访时的 38.5（12-48）。有 2 个髋臼杯需要翻修（3.2%）：1 个因无菌性松动，1 个因感染。
Tritanium 翻修髋臼在中期至长期内具有良好的临床和影像学结果，失败率低，并发症少。更长时间的随访将有助于评估该植入物结构的持续存活率。
