Association of postoperative acetabular abduction angle with gait asymmetry and adverse reactions following total hip arthroplasty across different surgical approaches

BACKGROUND: Total hip arthroplasty (THA) is effective for end-stage hip disorders, but evidence on the combined effects of surgical approach and acetabular abduction angle remains limited. This study investigated the associations of surgical approach and acetabular abduction angle with gait symmetry, prosthesis alignment, and complications after THA. RESEARCH DESIGN AND METHODS: = 60 each). Each group was further stratified by acetabular abduction angle (ideal 40°-50°; non-ideal: <40° or >50°). Gait asymmetry index (AI), acetabular anteversion, hip center displacement, and serum inflammatory marker levels were assessed postoperatively. Adverse events within 12 months were recorded. RESULTS: < 0.05). CONCLUSION: The direct anterior approach and an acetabular abduction angle of 40°-50° were associated with improved early recovery, reduced gait asymmetry, and lower complication rates after THA.