Andersen Annette Vest, Kjersgaard Anne Grete, Solgaard Søren
Department of Orthopedic Surgery, Gentofte Hospital, Niels Andersens Vej 65, 2900 Hellerup, Denmark.
ISRN Orthop. 2013 Jan 10;2013:629201. doi: 10.1155/2013/629201. eCollection 2013.
32 patients received a Trilogy- or Trilogy-Longevity-constrained acetabular liner for recurrent dislocations after total hip replacement. The constrained liner was inserted into a well-fixed Trilogy acetabular shell with snap fit. At 1.8-year followup (range 3-63 months), 4 patients had suffered further dislocation(s) (12%), and one patient had revision surgery for a loosened acetabular shell. Radiologic evaluation detected no definitively loose components, but one patient with progressing radiolucent lines around the femoral component and one patient with an acetabular cyst were found, as well as a patient with a loose locking ring (but otherwise no failure). The nineteen patients who were available for the present followup had a mean Harris Hip Score of 81. The constrained liner is an effective method of dealing with recurrent dislocations in well-fixed components.
32例患者在全髋关节置换术后因复发性脱位接受了Trilogy或Trilogy-Longevity限制性髋臼衬垫。将限制性衬垫通过卡扣配合插入固定良好的Trilogy髋臼壳中。在1.8年的随访期（范围为3 - 63个月），4例患者再次发生脱位（12%），1例患者因髋臼壳松动接受了翻修手术。影像学评估未发现明确松动的部件，但发现1例患者股骨部件周围有进展性透亮线，1例患者有髋臼囊肿，还有1例患者有锁定环松动（但无其他失败情况）。可用于本次随访的19例患者的Harris髋关节平均评分为81分。对于固定良好的部件，限制性衬垫是处理复发性脱位的有效方法。
