Assessing functional outcome using modified Harris hip score in patients undergoing total hip replacement

Abstract

Introduction: Harris Hip Score (HHS) is used for assessing functional outcome in patients undergoing total hip replacement (THR). The present study aimed to assess patients who underwent THR for various indications with modified HHS at different stages pre- and post-operatively. Methodology: Patients who were admitted to our indoor ward for THR from December 2008 till December 2010 were included in the study. Detailed history and physical examination was done for all patients. On every follow up day patients were x-rayed and scored according to the Modified HHS. Pre-operative and intra-operative details were noted using a pretested semi-structured questionnaire. Results: We analysed 20 hip joints in the study. Most common indication of surgery was osteoarthritis secondary to avascular necrosis head of femur. Average modified HHS was 28 preoperatively, increased to 64 at 6 weeks, 86 at six months, 90 at one year and 92 at the last follow-up. After one year follow up, modified HHS was excellent in 17 patients and good in three patients. Modified HHS was excellent in 11 cases where duration of surgery was 136 to 160 minutes and in 2 cases where duration of surgery was 161-185 minutes. Furthermore, modified HHS was excellent in patients in whom partial and full weight bearing was started early. Conclusions: Patients who underwent early partial and full weight bearing also reported excellent modified HHS at final follow up. We recommend the use of modified HHS for assessing post-THR functional status of patients.