Mid-term outcomes of a stemless ceramic head anatomic total shoulder replacement.

Background: In an anatomic shoulder replacement (aTSR) good results have been reported with the use of a stemless humeral prosthesis. In vitro a ceramic articulation with polyethylene has been shown to produce less polyethylene wear particles than with metal. This study aims to evaluate clinical and radiographic results of a stemless aTSR with a ceramic head articulating with a polyethylene glenoid component, with mid-term follow-up.

Accuracy of patient-specific instrumentation in anatomic and reverse total shoulder arthroplasty.

Purpose: Glenoid component malposition is associated with poor function and early failure of both anatomic and reverse total shoulder arthroplasty. Glenoid positioning is challenging particularly in the setting of bone loss or deformity. Recently, the use of computer assistance has been shown to reduce implantation error.

The epidemiology of knee injuries in English professional rugby union.

Background: Detailed injury epidemiology is an invaluable tool for reducing risks associated with sporting injuries. Very little accurate injury surveillance data exist regarding knee injuries in professional rugby.

Hypotheses: (1) Knee injuries have a greater impact on the game than injuries to other body locations.