title: Femoral neck fractures following Birmingham hip resurfacing: a national review of 50 cases.
abstract: Between April 1999 and April 2004, 3497 Birmingham hips were inserted by 89 surgeons. Fracture of the neck of the femur occurred in 50 patients, an incidence of 1.46%. Complete data were available for 45 patients in whom the incidence was 1.91% for women and 0.98% for men. The relative risk of fracture for women vs men was 1.94961 and this was statistically significant (p < 0.01). The mean time to fracture was 15.4 weeks. In women the fractures occurred at a mean of 18.5 weeks and were more likely to have been preceded by a prodromal phase of pain and limping. In men the mean time to fracture was 13.5 weeks. Significant varus placement of the femoral component, intra-operative notching of the femoral neck and technical problems were common factors in 85% of cases.
authors.affiliation: Melbourne Orthopaedic Group, 33 The Avenue, Windsor, Victoria 3181, Australia. ashimmin@optusnet.com.au
authors.forename: A J
authors.initials: AJ
authors.lastname: Shimmin
authors.forename: D
authors.initials: D
authors.lastname: Back
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D001315:Australia / Q000453:epidemiology; D005260:Female; D005265:Femoral Neck Fractures / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D012086:Reoperation; D018570:Risk Assessment