Comparative study of different approaches of Total Hip Arthroplasty based on inclination angle of acetabular cup and Post operative rehabilitation

Introduction: Total hip arthroplasty (THA) is considered to be one of the most successful orthopaedic interventions of its generation. Joint replacement (arthroplasty) as a surgical option for end stage arthritis is well established now and millions of patients across the world have benefited. India is a country of 1.4 billion people with significant knee and hip arthritis population. According to Frost and Sullivan research, 70,000 joint replacement surgeries were performed in India in the year 2011. The most common cause of chronic hip pain and disability is arthritis. Osteoarthritis, rheumatoid arthritis, and traumatic arthritis are the most common forms of this disease. Aims of Study: To compare post-operative outcome as implant positioning in terms of abduction angle of the cup & rehabilitation based on Harris Hip Score at 2 months and 4 months respectively in different approaches of approach of total hip replacement. Materials and Methods: This study was conducted in the department of Orthopaedics at Max Super specialty hospital, Vaishali, Ghaziabad, UP after receiving clearance from the Ethical Committee of the institution. It was a randomized case control study. Two different groups of 32 patients each were evaluated and inclination of acetabular cup was calculated on plain radiograph, subsequently the rehabilitation was also evaluated on basis of Harris Hip score in these patients. Results: In the present study, it was observed that mean postoperative abduction angle in Group A 47.82 ±6.87 and Group B was 51.19 ±7.21 degree respectively. The mean postoperative abduction angle in Group A was less compared to Group B with statistical significance. (P<0.05) In the present study, it was observed that intergroup comparison of mean Harris hip score post-operative at discharge, at 2 months & 4 months in Group A and Group B showed no statistical significance. (P>0.05) The intragroup comparison of mean Harris hip score post-operative at discharge, 2 months and 4 months in Group A and Group B showed statistical significance. (P<0.05) Conclusion: Present study revealed a significant statistical difference on intragroup comparison of inclination angle and rehabilitation based on Harris Hip Score in both the groups. Keywords: Arthroplasty, Harris Hip Score, Angle of Inclination