Instability in total hip arthroplasty: A literature review
Daisuke Takahashi, Tomohiro Shimizu, Takuji Miyazaki, Takuya Ogawa, Norimasa Iwasaki
Abstract
Purpose To introduce prevention and treatment methods for instability after total hip arthroplasty (THA) on the basis of the results of several recent studies. Methods We comprehensively summarized and evaluated the results of several studies on the frequency, causes, countermeasures, and treatments after THA. Results We found that surgeon experience, mobility of the lumbosacral spine, and femoral head size influence the dislocation rate after THA, and that dual-mobility acetabular components, lipped liners, and intraoperative support systems, including navigation and robotics, can decrease the dislocation rate. Conclusions Dual-mobility and lipped liners improve stability after THA; however, their indications should be carefully considered. Judicious use of postoperative mobility restriction may benefit some patients.