Interprosthetic dislocations of the Charnley/Hastings hemiarthroplasty--report of 11 cases in 350 consecutive patients.
retrospective_cohort · Level III
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Abstract
We report 11 cases of interprosthetic dislocation of the Charnley/Hastings hemiarthroplasty in a retrospective study of 350 consecutive patients treated for an acute femoral neck fracture. We found a total of 14 dislocations (4.0%), 11 were interprosthetic. The median age of the 350 patients was 79 (36-99) years and the median age of the 11 patients with an interprosthetic dislocation was 85 years (82-94). The median time from surgery to radiologically acknowledged dislocation was 18 (4-64) days. These interprosthetic dislocations may be caused by either an assembly mistake perioperatively, by maximum angulation and impingement between the components, or by trauma.
Medical subject headings
- Arthroplasty, Replacement, Hip
- Femoral Neck Fractures
- Hip Dislocation
- Hip Prosthesis
- Prosthesis Failure