Department of Orthopaedics and Tumor Orthopaedics, University of Muenster, Muenster, Germany.
PLoS One. 2019 Feb 7;14(2):e0212072. doi: 10.1371/journal.pone.0212072. eCollection 2019.
Due to the increasing numbers of revision total hip arthroplasty (THA) procedures being carried out, the frequency of major acetabular defects is also rising. A combination of an anti-protrusio cage and a dual mobility cup has been used in our department since 2007 in order to reduce the dislocation rate associated with complex defects. Although both implants have an important place in endoprosthetics, there are as yet limited data on the dislocation and complication rates with this combination.
This retrospective study included all patients in whom a Burch-Schneider cage and a dual mobility cup were implanted in our department between 2007 and 2014 and who had a minimum follow-up period of 24 months.
The study included 79 patients with a mean follow-up period of 5.3 years. The implant survival rate was 85% at 65 months. Postoperative dislocation occurred in two cases (2.1%), with the first dislocation taking place within the first 3 weeks in both of these patients.
The present study shows a promising dislocation rate with a combination of an anti-protrusio cage and a dual mobility cup. Particularly in the medium-term follow-up, no further dislocations occurred in the study. A maximum cup inclination of 45° in revision cases was associated with a lower dislocation rate in this group of patients.
由于翻修全髋关节置换术（THA）的数量不断增加，髋臼主要缺损的发生率也在上升。自 2007 年以来，我们科室一直采用防前脱位笼和双动杯联合治疗，以降低与复杂缺损相关的脱位率。尽管这两种植入物在假体植入术中都有重要作用，但关于这种联合治疗的脱位和并发症发生率的数据还很有限。
本回顾性研究纳入了 2007 年至 2014 年期间在我们科室接受 Burch-Schneider 笼和双动杯植入的所有患者，随访时间至少 24 个月。
研究共纳入 79 例患者，平均随访 5.3 年。65 个月时的植入物生存率为 85%。术后发生 2 例（2.1%）脱位，这 2 例患者的首次脱位均发生在术后 3 周内。
本研究显示，防前脱位笼和双动杯联合使用具有较低的脱位率。尤其是在中期随访中，该组患者无进一步发生脱位。翻修病例中最大杯倾斜度为 45°与该组患者较低的脱位率相关。
