Hip dislocation and the sequel of recurrent instability continues to be a problem following Total Hip Arthroplasty, and is one of the leading causes of revision surgery.
髋关节脱位以及不稳定是髋关节置换的主要问题，是髋关节置换术后翻修的首要原因。
2
Instability: Dislocation is one of the most common complications of total hip arthroplasty.
不稳：脱位是全髋置换最常见的并发症之一。
3
To evaluate fracture instability, the total sum of stresses due to residual welding or rolling stresses, dead load, and live loads must be considered.