Abstract
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. 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. 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. 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.
Highlights
Materials and MethodsPelvic biomechanics is an important consideration when deciding on a surgical treatment strategy for developmental dysplasia of the hip (DDH)
pericapsular osteotomy (PPO) affects the biomechanics of the pelvis much less than Salter innominate osteotomy (SIO)
PPO demonstrated ideal biomechanical results compared with SIO, with fewer changes to the pelvic ring and the hip joints
Summary
Pelvic biomechanics is an important consideration when deciding on a surgical treatment strategy for developmental dysplasia of the hip (DDH). Salter innominate osteotomy (SIO) and Pemberton pericapsular osteotomy (PPO) affect hip and pelvic biomechanics in different ways, and previous reports in the orthopedic literature have cited the various advantages and disadvantages of each method. Few studies have compared the pelvic biomechanics of these two osteotomy techniques. The pelvic biomechanics were compared for a series of patients who underwent SIO for one hip and PPO for the other hip, with correct indications. Fifty-seven out of 126 patients who had undergone a one-stage procedure involving SIO for one hip and PPO for the other hip between 1993 and 2010 were able to be contacted and agreed to be included in this case series. All surgeries were performed with correct indications by one surgeon in our clinic
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