Pattyn Christophe, Willekens Philippe, Audenaert Emmanuel
Acta Orthop Belg. 2018 Jun;84(2):149-153.
The success of dual-mobility sockets in achieving implant stability in primary hip replacement is already well established. However, stability cannot always be achieved, especially when dealing with more difficult indications. At our department, 104 dual-mobility sockets (92 uncemented and 12 cemented) were implanted for primary total hip arthroplasty in 97 patients between 2009 and 2013. Indications for hip arthroplasty included primary and secondary coxarthrosis, acetabular and subcapital fractures, avascular necrosis, tumor surgery and metastatic fractures. Although no loosenings were observed, 2 dislocations and 1 infection occurred shortly after surgery. In this challenging group of patients no fixation problems or intraprosthetic dislocations have been observed. The design therefore seems to be a valid alternative to constrained implants, especially in high-risk cases, although dislocation cannot be prevented at all times. Although the findings are very promising, long-term survival studies are mandatory to evaluate intraprosthetic stability and fixation longevity of dual-mobility sockets.
双动髋臼杯在初次髋关节置换中实现植入物稳定性方面的成功已得到充分证实。然而，稳定性并非总能实现，尤其是在处理更具挑战性的适应症时。在我们科室，2009年至2013年间，为97例患者植入了104个双动髋臼杯（92个非骨水泥型和12个骨水泥型）用于初次全髋关节置换术。髋关节置换术的适应症包括原发性和继发性髋关节炎、髋臼骨折和股骨头下骨折、缺血性坏死、肿瘤手术以及转移性骨折。尽管未观察到松动情况，但术后不久发生了2例脱位和1例感染。在这群具有挑战性的患者中，未观察到固定问题或假体内部脱位。因此，该设计似乎是限制性植入物的有效替代方案，尤其是在高风险病例中，尽管脱位并非总能预防。尽管研究结果非常有前景，但仍需进行长期生存研究以评估双动髋臼杯的假体内部稳定性和固定寿命。
