© 2013 Wichtig Editore - ISSN 1120-7000 Hip Int ( 2013 ; : 2 ) 162 - 165 23 162 Revision hip replacement in patients 55 years of age and younger Sujith Konan, Agustine Soler, Fares S. Haddad Department of Trauma and Orthopaedics, University College Hospital, London - UK ABSTRACT: The purpose of this study was to assess the efficacy and complications associated with revi- sion hip arthroplasty undertaken in patients under 55 years of age. A review of our revision hip database showed that 430 revision hip arthroplasties undertaken over the past 9 years had a minimum follow-up of 2 years. Of these, 84 (46 female, 38 male) patients were under 55 years of age. The index procedures were preformed at an average age of 46 years (range 15 years to 54 years). The etiology of failure was aseptic loosening (74%), followed by infection (8%) and recurrent dislocation (7%). In the majority of cases, uncemented implants were used at revision surgery (91% uncemented femoral stem, 100% uncemented acetabular cup). A form of bone graft was necessary in 39% of cases. At final follow-up satisfactory progress was noted in all cases with a statistically significant improve- ment in Harris hip score (p<0.05). Revision of hip arthroplasty in patients below 55 years of age is associated with significant improve- ment in function and patient satisfaction. KEY WORDS: Hip revision, Hip revision in young patient, Revision arthroplasty Accepted: November 29, 2012 ORIGINAL ARTICLE DOI: 10.5301/HIP.2013.10814 INTRODUCTION Total hip replacement has become one of the most suc- cessful orthopaedic procedures. With improvements in metallurgy and bearing surfaces, the indications for this procedure have become broader. Not only are hip replace- ments being offered to the more active patients, but they are also offered as a solution to hip pathology in the young- er patient. Implant loosening in young patients who have undergone cemented total hip replacements and poor results of cemented revisions have been reported (1-4). It has been postulated that high patient activity levels and implant stresses contribute to early failure and therefore, the need for early revision arthroplasty. The aim of this study was to review the efficacy, complica- tions and outcomes of revision hip replacement in patients under 55 years of age. METHODS A review of our revision hip database showed that 430 revision hip arthroplasties undertaken over the past nine years had a minimum follow-up of two years. Of these, 84 patients were under the age of 55 years at the time of the revision procedure. There were 46 male patients and 38 female patients in this cohort and the mean age at the time of surgery was 46 years (range 15-54 years). The minimum follow-up was two years (mean 5.2 years, range 2-9 years). The mean interval from previous hip proce- dure to revision hip surgery was 9 years (range 0-7 years). Sixty-one patients had cemented femoral stems and thirty eight patients had cemented acetabular cups. Cementless acetabular cups were present in 46 patients and cement- less femoral stems in 23 patients. Seventy-four patients were undergoing their first revision, seven their second and