title: Survival of the cementless Spotorno stem in the second decade.
abstract: High survival rates have been reported for the uncemented CLS Spotorno stem up to 10 years. To confirm survival at longer followup we report the minimum 15-year (mean, 17 years; range, 15-20 years) for 257 hips using this stem. We retrospectively evaluated the clinical and radiographic results of all 326 patients (354 THAs) operated between 1985 and 1989. The patients had a mean age of 57 years using an uncemented grit-blasted, tapered titanium femoral stem. Eighty-six patients (89 hips) died and eight patients (eight hips) were lost to followup, leaving 240 patients (257 hips) for evaluation. The femoral component was revised in 35 hips: eight for infection, nine for periprosthetic fracture, one for traumatic loosening, and 17 for aseptic loosening. Survival of the stem was 88% at 17 years (95% confidence interval, 84%-92%), and survival with femoral revision for aseptic loosening as an end point was 94% (95% confidence interval, 91%-97%). The median Harris hip score at followup was 80 points. No thigh pain was reported. Small osteolytic lesions (< 1 cm(2)) were found in the proximal Gruen zones (1 or/and 7) in 28 hips (15%). No distal femoral osteolysis was found. The long-term survival with this type of femoral component remains high in the second decade.
authors.affiliation: Stiftung Orthopädische Universitätsklinik Heidelberg, Schlierbacher Landstrasse 200a, 69118, Heidelberg, Germany. peter.aldinger@ok.uni-heidelberg.de
authors.forename: Peter R
authors.initials: PR
authors.lastname: Aldinger
authors.forename: Alexander W
authors.initials: AW
authors.lastname: Jung
authors.forename: Steffen J
authors.initials: SJ
authors.lastname: Breusch
authors.forename: Volker
authors.initials: V
authors.lastname: Ewerbeck
authors.forename: Dominik
authors.initials: D
authors.lastname: Parsch
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods; D001843:Bone Cements; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D007592:Joint Diseases / Q000473:pathology / Q000503:physiopathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D010146:Pain; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular; D012189:Retrospective Studies; D012720:Severity of Illness Index; D014025:Titanium; D055815:Young Adult
chemical_list: D001843:Bone Cements; D014025:Titanium