Spinal Factors Influencing Change in Pelvic Sagittal Inclination From Supine Position to Standing Position in Patients Before Total Hip Arthroplasty |
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Authors: | Satoru Tamura Masaki Takao Takashi Sakai Takashi Nishii Nobuhiko Sugano |
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Institution: | 1. Department of Orthopaedic Medical Engineering Osaka University Graduate School of Medicine Suita, Japan;2. Department of Orthopaedic Surgery Osaka University Graduate School of Medicine Suita, Japan |
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Abstract: | In some atypical patients, pelvic sagittal inclination (PSI) changes posteriorly by > 10° from supine to standing position before total hip arthroplasty (THA). Several studies have suggested PSI in standing position is related to lumbar degeneration. The purpose of this study was to investigate spinal factors influencing changes in PSI from supine to standing position before THA. Participants comprised 163 consecutive patients who had undergone THA. Presence of compression fractures, presence of lumbar spondylolisthesis, thoracic kyphosis angle, lumbar lordosis angle, S1 anterior tilt angle and T4 plumb line position were investigated as spinal factors. Presence of compression fractures, age, presence of lumbar spondylolisthesis and small S1 anterior tilt angle were independently associated with posterior change in PSI from supine to standing position in patients before THA. |
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Keywords: | pelvic sagittal inclination total hip arthroplasty compression fracture age lumbar spondylolisthesis |
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