title: Femoral neck fracture after Birmingham Hip Resurfacing Arthroplasty: prevalence, time to fracture, and outcome after revision.
abstract: A consecutive cohort of 3076 Birmingham Hip Resurfacings from a single institution was analyzed. The prevalence of femoral neck fracture, the time to fracture, and the outcome after revision were investigated. Fractures occurred in 34 hips (prevalence, 1.1%). Median time to fracture was 0.27 year (range, 0.014-11.2 years). Mean operation time for revision was 59 minutes, and 71% underwent isolated femoral component revision. At a mean follow-up of 5.5 years since revision, 3 patients required re-revision (2 aseptic loosening, 1 for sepsis) giving a survival of 95.7% (confidence interval, 86.9%-100%) at 5 years for the revision. Median Oxford Hip Score was 12.5% (interquartile range, 3.2%-32.3%). There were no cases of radiologic failure during follow-up. Most fractures occur early after hip resurfacing and were straightforward to revise.
authors: Royal Orthopaedic Hospital, Northfield, Birmingham, United Kingdom.
authors: Gulraj S
authors: GS
authors: Matharu
authors: Callum W
authors: CW
authors: McBryde
authors: Matthew P
authors: MP
authors: Revell
authors: Paul B
authors: PB
authors: Pynsent
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D005260:Female; D005265:Femoral Neck Fractures / Q000209:etiology / Q000601:surgery*; D062785:Hemiarthroplasty; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D057068:Periprosthetic Fractures / Q000209:etiology / Q000601:surgery*; D011475:Prosthesis Failure; D012086:Reoperation; D055815:Young Adult