title: Initial implant stability predicts migration but not failure in cementless acetabular revision with bone grafting.
abstract: Host bone contact of less than 50% is perceived but not proven to cause migration and loosening after acetabular revision. A prospective analysis of cementless acetabular revision cases with impaction grafting was performed to determine if this was an independent risk factor for these events. Sixty-two hips in 54 patients were assessed at a mean follow-up of 84.5 months (range 61-112) yielding a probability of 94.6% of retaining the acetabular component using revision for aseptic loosening as the end point. No single factor was independently causative for loosening, although Type III fixation was associated with migration (p=0.0159); subanalysis suggested that achieving host-bone contact in at least part of the dome and posterior column is important.
authors.affiliation: Department of Orthopaedic Surgery, University College Hospital, London NW1 2BU, UK.
authors.forename: Shelain
authors.initials: S
authors.lastname: Patel
authors.forename: Mohamed
authors.initials: M
authors.lastname: Sukeik
authors.forename: Fares S
authors.initials: FS
authors.lastname: Haddad
mesh_terms: D000077:Acetabulum / Q000601:surgery*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D016025:Bone Transplantation; D005260:Female; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000601:surgery; D011446:Prospective Studies; D011475:Prosthesis Failure; D012086:Reoperation; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome