Year: 2026 | Month: February | Volume: 13 | Issue: 2 | Pages: 206-218
DOI: https://doi.org/10.52403/ijrr.20260221
Differences in Spinopelvic Alignment and Disability Scores Before and After Hip Arthroplasty
A.A. Ngurah Krisna Dwipayana1, I Wayan Suryanto Dusak2, I Gusti Lanang Ngurah Agung Artha Wiguna2, Elysanti Dwi Martadiani3
1Resident of the Department of Orthopaedic and Traumatology, Udayana Faculty of Medicine, Indonesia,
2Department of Orthopaedic and Traumatology, Udayana Faculty of Medicine, Indonesia,
3Department of Radiology, Faculty of Medicine, Udayana University, Ngoerah Hospital, Denpasar, Indonesia
Corresponding Author: A.A. Ngurah Krisna Dwipayana
ABSTRACT
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<0.001; ODI median decreased from 44.0 (34.0–58.0) to 32.0 (22.0–40.0), p-value<0.001; RDQ mean decreased from 17.63±1.86 to 15.89±3.16, p-value=0.003. Among spinopelvic parameters, PI decreased significantly (54.28±16.73° to 50.88±14.92°; p-value=0.029), while PT, SS, and LL showed no significant change.
Conclusion: At 3 months post-THA, patients with advanced hip OA experienced significant reductions in pain and disability. Radiographically, PI decreased, whereas PT, SS, and LL remained stable, indicating early pelvic adaptation without immediate global sagittal realignment.
Keywords: Hip osteoarthritis, patient-reported outcomes, pelvic incidence, spinopelvic alignment, total hip arthroplasty
[PDF Full Text]