title: Revision arthroplasty using an anti-protrusio cage for massive acetabular bone deficiency.
abstract: Revision hip arthroplasty in patients with massive acetabular bone deficiency has generally given poor long-term results. We report the use of an 'anti-protrusio cage', secured to the ischium and ilium, which bridges areas of acetabular bone loss, provides support for the acetabular socket, and allows pelvic bone grafting in an environment protected from excessive stress. Forty-two failed hip arthroplasties with massive acetabular bone loss were revised with the Burch-Schneider anti-protrusio cage and evaluated after two to 11 years (mean five years). There was failure due to sepsis in five hips (12%) and aseptic loosening in five (12%); the remaining 32 hips (76%) showed no evidence of acetabular component failure or loosening.
authors.affiliation: Maurice E. Müller Foundation, Berne, Switzerland.
authors.forename: D J
authors.initials: DJ
authors.lastname: Berry
authors.forename: M E
authors.initials: ME
authors.lastname: Müller
mesh_terms: D000077:Acetabulum / Q000601:surgery*; D016025:Bone Transplantation / Q000379:methods; D005069:Evaluation Studies as Topic; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis / Q000295:instrumentation* / Q000379:methods / Q000706:statistics & numerical data; D006801:Humans; D007431:Intraoperative Complications / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation / Q000706:statistics & numerical data; D014182:Transplantation, Autologous; D014184:Transplantation, Homologous