Definition and validation of a system for classifying the undersized Corail femoral stem in total hip arthroplasty.

Introduction: The uncemented total hip arthroplasty relies on a secure initial fixation of the femoral stem to achieve osseointegration. Undersizing of the femoral implant compromises this. Surgeons routinely review postoperative radiographs to assess appropriate sizing, but existing methods of assessment lack standardisation.

The articular surface replacement implant recall: a United Kingdom district hospital experience.

We present our experience of the articular surface replacement (ASR) hip and the implant recall process. One hundred and twenty-one ASR components were implanted (21 resurfacing hip arthroplasty (RHA) and 100 ASR/XL modular total hip replacements). At the time of the implant recall in August 2010 there were 111 surviving hips (92%) with a mean follow-up of 44 months.

Reducing the rate of early primary hip dislocation by combining a change in surgical technique and an increase in femoral head diameter to 36 mm.

Introduction: We report how changes to our total hip arthroplasty (THA) surgical practise lead to a decrease in early hip dislocation rates.

Methods: Group B consisted of 421 consecutive primary THA operations performed via a posterior approach. The operative technique included a meticulous repair of the posterior capsule, alignment of the acetabular cup with the transverse acetabular ligament (TAL) and a 36-mm-diameter femoral head.