• OBJECTIVE
    • This study aims to compare the pelvic biomechanics of patients who underwent Salter innominate osteotomy (SIO) for one hip and Pemberton pericapsular osteotomy (PPO) for the other hip.
  • MATERIALS AND METHODS
    • Fifty-seven of 126 patients who received a one-stage procedure involving SIO for one hip and PPO for the other hip were included in this series. Preoperative x-rays, archived reports and patient recall were obtained and retrospectively analyzed for these 57 patients. Pelvic biomechanics of the two osteotomy techniques were compared on x-rays and computerized tomography imaging.
  • RESULTS
    • Based on x-rays, three hips with SIO and 1 hip with PPO had changes that could reflect unstable pelvic biomechanics. SIO caused an average lower limb discrepancy of 0.47 cm in all patients. Positive results were found in 5 patients at their most recent clinical examination.
  • CONCLUSION
    • PPO affects the biomechanics of the pelvis much less than SIO. PPO demonstrated ideal biomechanical results compared with SIO, with fewer changes to the pelvic ring and the hip joints.