title: Uncemented porous tantalum acetabular components: early follow-up and failures in 613 primary total hip arthroplasties.
abstract: Uncemented tantalum acetabular components were introduced in 1997. The purpose was to determine the 2- to 10-year results with this implant material in primary total hip arthroplasty. Our registry identified all primary total hip cases with porous tantalum cups implanted from 1997 to 2004. Clinical outcomes and radiographs were studied. 613 cases were identified. Seventeen percent of patients were lost to follow-up. Twenty-five reoperations were performed (4.4%). Acetabular cup removal occurred in 6 cases (1.2%). No cups were revised for aseptic loosening. Incomplete radiolucent lines were found on 9.3% of initial postoperative radiographs. At 2 years, 67% had resolved. Zero new radiolucent lines were detected. Two- to 10-year results of porous tantalum acetabular components for primary total hip arthroplasty demonstrate high rates of initial stability and apparent ingrowth.
authors.affiliation: University of Iowa Hospitals and Clinics, Iowa City, Iowa.
authors.forename: Nicolas O
authors.initials: NO
authors.lastname: Noiseux
authors.affiliation: ISK Institute, New York, New York.
authors.forename: William J
authors.initials: WJ
authors.lastname: Long
authors.affiliation: Mayo Clinic, Rochester, Minnesota.
authors.forename: Tad M
authors.initials: TM
authors.lastname: Mabry
authors.affiliation: Mayo Clinic, Rochester, Minnesota.
authors.forename: Arlen D
authors.initials: AD
authors.lastname: Hanssen
authors.affiliation: Mayo Clinic, Rochester, Minnesota.
authors.forename: David G
authors.initials: DG
authors.lastname: Lewallen
mesh_terms: D000077:Acetabulum / Q000601:surgery*; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation; D001672:Biocompatible Materials; D002484:Cementation; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint; D006622:Hip Prosthesis; D006801:Humans; D007592:Joint Diseases / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D020959:Polyethylene; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D013635:Tantalum; D014025:Titanium; D055815:Young Adult
chemical_list: D001672:Biocompatible Materials; D013635:Tantalum; D020959:Polyethylene; D014025:Titanium
keywords: acetabular component; primary total hip arthroplasty; tantalum