Primary hip replacement in young osteoarthritic patients current practices in one UK region

Approximately 10% of primary hip replacements performed each year for osteoarthritis are in patients aged 55 or younger. These patients have a longer life expectancy and a higher activity level than an older cohort, which may translate to higher revision rates. We utilized a regional hip register (Trent and Welsh Arthroplasty Audit Group (TWAAG)) to review current surgical practice in this age group. From 01/01/2000 31/12/2002, we were notified of 7,678 primary THRs for osteoarthritis. Of these 911 (11.7%) were performed on patients aged 55 or less. Age, gender, grade of lead operating surgeon, type of femoral and acetabular prostheses implanted, fixation method, femoral head size and bearing surfaces were recorded. There were 434 males and 477 females, with an age range of 16-55. Thirty-five femoral and 33 acetabular components were identified: 61.7% of femoral prostheses were cemented; 67.4 % of acetabular prostheses were uncemented. Fifty per cent of implants had a metal/UHMWPE bearing. Other bearing surfaces comprised ceramic/UHMWPE 28.7%, metal/metal resurfacing 13.8% and ceramic/ceramic 7.5%. Consultants performed 84.5% of procedures. The study indicates that there does not appear to be a clear consensus as to component choice or optimum fixation method in the younger patient. (Hip International 2005; 15: 159-65) KEY WORDS: Hip replacement, Arthroplasty, Young patient, Osteoarthritis.