Varley James, Parker Martyn J
Peterborough District Hospital, Thorpe Road, Peterborough, PE3 6DA UK.
Int Orthop. 2004 Oct;28(5):274-7. doi: 10.1007/s00264-004-0572-z. Epub 2004 Aug 17.
It has been stated in the literature that a bipolar hemiarthroplasty has a lower risk of dislocation compared to a unipolar hemiarthroplasty. As this statement has not been substantiated we undertook a systematic review of the literature of published articles from the last 40 years. In addition we used our own database of hip fractures. One hundred and thirty-three published articles were included in the review to give a total of 23,107 cases. The overall dislocation rate for all types of hemiarthroplasty was 791/23,107 (3.4%). An increased risk of dislocation was associated with a posterior surgical approach and the use of a cemented prosthesis. After adjustment for surgical approach and the use of cement there was no difference in risk of dislocation between unipolar and bipolar hemiarthroplasties. There was an increased risk of open reduction for a bipolar hemiarthroplasty.
文献中指出，与单极半关节置换术相比，双极半关节置换术脱位风险更低。由于这一说法尚未得到证实，我们对过去40年发表的文章进行了系统的文献综述。此外，我们还使用了自己的髋部骨折数据库。该综述纳入了133篇已发表文章，共计23107例病例。所有类型半关节置换术的总体脱位率为791/23107（3.4%）。脱位风险增加与后入路手术及使用骨水泥型假体有关。在调整手术入路和骨水泥使用情况后，单极和双极半关节置换术之间的脱位风险没有差异。双极半关节置换术切开复位的风险增加。
