title: Porous tantalum uncemented acetabular shells in revision total hip replacement: two to four year clinical and radiographic results.
abstract: In cementless revision total hip arthroplasty (THA), achieving initial implant stability and maximising host bone contact is key to the success of reconstruction. Porous tantalum acetabular shells may represent an improvement from conventional porous coated uncemented cups in revision acetabular reconstruction associated with severe acetabular bone defects. We reviewed the results of 46 acetabular revisions with Paprosky 2 and 3 acetabular bone defects done with a hemispheric, tantalum acetabular shell and multiple supplementary screws. At a mean follow-up of 40 (24-51) months, one acetabular shell had been revised in a patient with a Paprosky 3B defect. Cementless acetabular revision with the tantalum acetabular shell demonstrated excellent early clinical and radiographic results and warrants further evaluation in revision acetabular reconstruction associated with severe acetabular bone defects.
authors.affiliation: Adult Orthopaedic Reconstruction, Department of Orthopaedics, University of British Columbia, Vancouver, Canada. wjykim@hotmail.com
authors.forename: W Y
authors.initials: WY
authors.lastname: Kim
authors.forename: N V
authors.initials: NV
authors.lastname: Greidanus
authors.forename: C P
authors.initials: CP
authors.lastname: Duncan
authors.forename: B A
authors.initials: BA
authors.lastname: Masri
authors.forename: D S
authors.initials: DS
authors.lastname: Garbuz
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001175:Arthrography; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006304:Health Status; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000503:physiopathology / Q000601:surgery*; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D012720:Severity of Illness Index; D013635:Tantalum; D055815:Young Adult
chemical_list: D013635:Tantalum