title: Total Hip Arthroplasty With an Uncemented Tapered Femoral Component in Patients Younger Than 50 Years of Age: A Minimum 20-Year Follow-Up Study.
abstract: Previously, we reported the mean 16-year results of primary uncemented total hip arthroplasty using a tapered femoral component in patients <50 years. The purpose of this study was to update our previous report using the Taperloc femoral component in young patients who had been followed for a minimum of 20 years postoperatively.
  
  
  
  Between 1983 and 1990, 108 consecutive uncemented total hip arthroplasties were performed in 91 patients of age <50 years, with use of the Taperloc femoral component. Every patient was followed for a minimum of 20 years after surgery or until death. At a mean of 25 (range, 20-29 years) postoperatively, 76 patients (91 hips) were living. The Harris Hip Score, radiographic results, complications, and Kaplan-Meier survivorship were evaluated.
  
  
  
  In the entire cohort of 108 hips, 9 femoral components (8%) have been revised, none for aseptic loosening. Five well-fixed stems were removed during acetabular revision, 3 stems were revised for infection, and 1 stem was exchanged because of a peroneal nerve palsy. Distal femoral osteolysis was identified around 1 hip. With failure defined as stem removal for any reason, implant survival was 90% (CI = 82-95) at 29 years. With failure defined as stem removal for aseptic loosening, implant survival was 100% at 29 years.
  
  
  
  Primary total hip arthroplasty with the Taperloc femoral component in young patients was associated with a high rate of survival at 29 years.
authors.affiliation: The Kennedy Center, Mercy Medical Center, Oshkosh, Wisconsin.
authors.forename: Jeffrey R
authors.initials: JR
authors.lastname: McLaughlin
authors.affiliation: Gundersen Lutheran Medical Center, LaCrosse, Wisconsin.
authors.forename: Kyla R
authors.initials: KR
authors.lastname: Lee
mesh_terms: D000077:Acetabulum / Q000601:surgery*; D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects* / Q000379:methods*; D001847:Bone Diseases / Q000401:mortality / Q000601:surgery; D005260:Female; D005269:Femur / Q000601:surgery*; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D015996:Survival Rate; D016896:Treatment Outcome
keywords: Taperloc; aseptic survivorship; results; uncemented total hip arthroplasty; young