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THOMPSON VERSUS EXETER STEM HEMIARTHROPLASTY FOR HIP FRACTURES: A RANDOMISED TRIAL



Abstract

To determine if any notable differences between a cemented Thompson stem hemiarthroplasty and a cemented Exeter stem hemiarthroplasty (ETS), 200 patients with a displaced intracapsular fracture were randomised between the two prosthesis. Surviving patients were followed-up for one year by a nurse blinded to the treatment allocation. The mean age of patients was 84 years and 13% were male.

There were no differences between groups for the length of surgery, need for blood transfusion or hospital stay. Implant related complications were three minor operative fractures of the femur in each group. Two patients in the Thompson group had dislocation of the prosthesis requiring revision surgery and one further patient in the Thompson group had late acetabular wear requiring conversion to a total hip replacement. One further patient in the Thompson group had cement retained in the acetabulum. In total therefore only three patients, all in the Thompson group, which required revision surgery. Easy of surgery was assessed subjectively by the surgeon and reported to be easier for the ETS group (p=0.0002). During follow-up there was no significant difference in the degree of residual pain between groups.

Conclusions are that the cemented Exeter stem hemiarthroplasty has some advantages over the traditional cemented Thompson hemiarthroplasty.

Correspondence should be addressed to: EFORT Central Office, Technoparkstrasse 1, CH – 8005 Zürich, Switzerland. Tel: +41 44 448 44 00; Email: office@efort.org

Author: Martyn Parker, United Kingdom

E-mail: dandmparker@tiscali.co.uk