Differences in Spinopelvic Alignment and Disability Scores Before and After Hip Arthroplasty

Introduction: Total hip arthroplasty (THA) is recognized as a reliable intervention for hip osteoarthritis (OA), yet potential complications and postoperative dissatisfaction remain. This study aimed to compare spinopelvic alignment parameters and patient-reported outcomes before surgery and three months after THA in patients with advanced hip OA. Methods: This single-center retrospective cohort included consecutive Indonesian adults with hip OA Tönnis grade 3 undergoing primary cementless THA via an anterior approach at Ngoerah Hospital (April–July 2024). Outcomes were measured using the oswestry disability index (ODI), visual analog scale (VAS), roland-morris disability questionnaire (RDQ) scores, and radiographic spinopelvic parameters such as pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), and lumbar lordosis (LL), all assessed on standardized full-spine–pelvis radiographs taken preoperatively and at 3 months postoperatively. Data analysis was conducted using SPSS ver. 22. Results: Nineteen patients were analyzed (73.7% female; mean age 61.6±12.2 years; BMI 27.4±2.4 kg/m²). Pain and disability improved significantly at 3 months: VAS median decreased from 5.0 (IQR 3.0–6.0) to 1.0 (0.0–3.0), p-value