title: Unipolar proximal femoral endoprosthetic replacement for tumour: the risk of revision in young patients.
abstract: We undertook a cemental unipolar proximal femoral endoprosthetic replacement in 131 patients with a mean age of 50 years (2 to 84). Primary malignant tumours were present in 54 patients and 67 had metastatic disease. In addition, eight patients had either lymphoma or myeloma and two had non-oncological disorders. The mean follow-up was 27 months (0 to 180). An acetabular revision was required later in 14 patients, 12 of whom had been under the age of 21 years at the time of insertion of their original prosthesis. The risk of acetabular revision in patients over 21 years of age was 8% at five years compared with 36% in those aged under 21 years. All the unipolar hips in this younger age group required revision within 11 years of the initial operation. We conclude that unipolar replacement should not be used in younger patients and should be avoided in patients with a life expectancy of more than five years.
authors.affiliation: Royal Orthopaedic Hospital, Bristol Road South, Birmingham B31 2AP, UK.
authors.forename: C R
authors.initials: CR
authors.lastname: Chandrasekar
authors.forename: R J
authors.initials: RJ
authors.lastname: Grimer
authors.forename: S R
authors.initials: SR
authors.lastname: Carter
authors.forename: R M
authors.initials: RM
authors.lastname: Tillman
authors.forename: A
authors.initials: A
authors.lastname: Abudu
authors.forename: L M
authors.initials: LM
authors.lastname: Jeys
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D002648:Child; D002675:Child, Preschool; D004812:Epidemiologic Methods; D005260:Female; D005266:Femoral Neoplasms / Q000556:secondary / Q000601:surgery*; D005270:Femur Head / Q000000981:diagnostic imaging; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation / Q000379:methods; D016896:Treatment Outcome; D055815:Young Adult