Daniel Alsoof1, Christopher L McDonald1, Matthew Kovoor2, Bassel G Diebo1, Eren O Kuris1, Valentin Antoci1, Alan H Daniels3. 1. Department of Orthopaedic Surgery, Alpert Medical School of Brown University, Providence, RI, 02903, USA. 2. Alpert Medical School of Brown University, Providence, RI, 02903, USA. 3. Department of Orthopaedic Surgery, Alpert Medical School of Brown University, Providence, RI, 02903, USA. alan_daniels@brown.edu.
Abstract
CASE: Hip-spine syndrome is a complex challenge for orthopedic surgeons. We present a 60-year-old female with a history of spinal fusion and total hip arthroplasty. The patient underwent extension of the previous fusion with sacropelvic fixation, and 5 months later she presented with left posterior prosthetic hip dislocation which required sedation and closed reduction. CONCLUSION: Even with no change in lumbar lordosis or pelvic tilt and adequate acetabular cup position, extension of the fusion construct may predispose patients to dislocation. This may be the result of an increased lever arm acting at the hip joint, thereby leading to instability.
CASE: Hip-spine syndrome is a complex challenge for orthopedic surgeons. We present a 60-year-old female with a history of spinal fusion and total hip arthroplasty. The patient underwent extension of the previous fusion with sacropelvic fixation, and 5 months later she presented with left posterior prosthetic hip dislocation which required sedation and closed reduction. CONCLUSION: Even with no change in lumbar lordosis or pelvic tilt and adequate acetabular cup position, extension of the fusion construct may predispose patients to dislocation. This may be the result of an increased lever arm acting at the hip joint, thereby leading to instability.
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