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  • Title: Does fusion length matter? Total hip arthroplasty dislocation after extension of lumbosacral fusion: a case report.
    Author: Alsoof D, McDonald CL, Kovoor M, Diebo BG, Kuris EO, Antoci V, Daniels AH.
    Journal: Spine Deform; 2023 Jan; 11(1):253-257. PubMed ID: 35921039.
    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.
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