title: Clinical outcome of total hip arthroplasty using the normalized and proportionalized femoral stem with a minimum 20-year follow-up.
abstract: Currently, there are several femoral stem designs available for use, but few have an extended track record. We have previously reported on 10- and 15-year outcome studies of total hip arthroplasty (THA) using a cemented normalized and proportionalized femoral stem from a single surgeon series. This is a follow-up study reporting the minimum 20-year outcome of this femoral stem design. The study began with THA performed in a consecutive series of 184 patients; stem fixation was achieved using first-generation cementing techniques. The overall early complication rate was 10%. There were 23 patients (31 hips) who had been followed-up for a minimum 20-year period (average 21.3 years). Mean d'Aubigne and Postel scores improved from 5.9 to 11.3; mean Harris hip scores improved from 43.8 to 92.8. Kaplan-Meier survivorship was 93% at 20 years (95% confidence interval); there were no stem failures. The use of a cemented normalized and proportionalized femoral stem in primary THA provides satisfactory long-term clinical and radiological outcomes in patients.
authors.affiliation: NYU-Hospital for Joint Diseases Department of Orthopedic Surgery, Musculoskeletal Research Center, New York, USA.
authors.forename: Sathappan S
authors.initials: SS
authors.lastname: Sathappan
authors.forename: Matthew L
authors.initials: ML
authors.lastname: Teicher
authors.forename: Craig
authors.initials: C
authors.lastname: Capeci
authors.forename: Michelle
authors.initials: M
authors.lastname: Yoon
authors.forename: Bradley R
authors.initials: BR
authors.lastname: Wasserman
authors.forename: William L
authors.initials: WL
authors.lastname: Jaffe
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip; D019544:Equipment Failure Analysis; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery; D011474:Prosthesis Design; D016896:Treatment Outcome