A study of clinical and functional outcome of primary total hip replacement in osteoarthritis of hip

Introduction and Objectives: Osteoarthritis is the most common disorder associated with severe hip pain and disability in adult population. Primary total hip replacement (THR) aims for immediate and long lasting effects on pain and function in osteoarthritic hip. The intend of this study was to evaluate the clinical and functional outcome of Primary total hip replacement using Modified Harris hip score. Materials and Method: A prospective study of 50 hips (38 patients) of osteoarthritis managed by Primary total hip replacement in Kempegowda institute of medical sciences, Bangalore between June 2014 to February 2017. The patients were assessed clinically and functionally using Modified Harris Hip Score pre and post operatively.Patients were followed for a minimum period of 2 years and maximum of 2.5 years. Results: 50 hips were operated in 38 patients for avascular necrosis (38), primary osteoarthritis (8), Ankylosing spondylitis (2) and Rheumatoid Arthritis (2). The mean total pre-operative Modified Harris hip score was 30.60 which improved postoperatively to a mean score of 88.90. We had complications in 8 patients, foot drop (2), superficial infection (2), limb length discrepancy (2), and posterior dislocation (2). We had good to excellent results in 84% and fair results in 12% patients. Conclusion: Our study suggests that Primary total hip replacement provides excellent clinical and functional outcome in osteoarthritis of hip.