title: Long-term results using the straight tapered femoral cementless hip stem in total hip arthroplasty: a minimum of twenty-year follow-up.
abstract: We report the first long-term results of a prospective cohort study after total hip arthroplasty using the cementless Bicontact hip stem. Between 1987 and 1990, 250 total hip arthroplasties in 236 patients were performed using the cementless Bicontact hip stem. The average follow-up was 22.8 years (20.4-24.8) and average age at index surgery was 58.1 years. Eighty-one patients died and 9 were lost to follow-up. We noted 11 stem revisions revealing an overall Kaplan Meier survival rate of 95.0% (CI 95%: 91.1-97.2%). The average Harris Hip Score revealed 81 points (range 24-93). The Bicontact hip stem demonstrated high survival rates despite high ages and osteopenic changes, which are equivalent to other long-term reports of cementless stem fixation.
authors.affiliation: Berufsgenossenschaftliche Unfallklinik Tübingen, Eberhard Karls Universität Tübingen, Schnarrenbergstr. 95, Tübingen, Germany.
authors.forename: Atesch
authors.initials: A
authors.lastname: Ateschrang
authors.affiliation: Berufsgenossenschaftliche Unfallklinik Tübingen, Eberhard Karls Universität Tübingen, Schnarrenbergstr. 95, Tübingen, Germany.
authors.forename: Kuno
authors.initials: K
authors.lastname: Weise
authors.affiliation: Berufsgenossenschaftliche Unfallklinik Tübingen, Eberhard Karls Universität Tübingen, Schnarrenbergstr. 95, Tübingen, Germany.
authors.forename: Siegfried
authors.initials: S
authors.lastname: Weller
authors.affiliation: Berufsgenossenschaftliche Unfallklinik Tübingen, Eberhard Karls Universität Tübingen, Schnarrenbergstr. 95, Tübingen, Germany.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Stöckle
authors.affiliation: Berufsgenossenschaftliche Unfallklinik Tübingen, Eberhard Karls Universität Tübingen, Schnarrenbergstr. 95, Tübingen, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: de Zwart
authors.affiliation: Berufsgenossenschaftliche Unfallklinik Tübingen, Eberhard Karls Universität Tübingen, Schnarrenbergstr. 95, Tübingen, Germany.
authors.forename: Björn Gunnar
authors.initials: BG
authors.lastname: Ochs
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects* / Q000379:methods* / Q000401:mortality; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery; D005272:Femur Neck / Q000000981:diagnostic imaging / Q000601:surgery; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011475:Prosthesis Failure; D011859:Radiography; D014025:Titanium; D055815:Young Adult
chemical_list: D014025:Titanium
keywords: femoral loosening; femoral stem survival; hip arthroplasty; primary hip replacement; straight titanium femoral stem