What is it about?
Some patients have a stiff back while some others have a flexible one. This variable mobility affects the position of the pelvis during activity like sitting or squatting. Atypical pelvic mobility might lead to prosthetic hip dislocation, and this article tries to answer this question.
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Why is it important?
Patients with severe degenerative disk disease have higher risk of prosthetic hip dislocation, mainly when they've been operated of their back with metal work let in place. It is likely the sagittal shape of the pelvis might predict the patient-specific normal pelvis mobility and therefore the risk of dislocation after hip replacement. This article classifies the multiple spine-hip relations mainly encounter in the population and launches the concept of "kinematic alignment technique for total hip arthroplasty (KA THA)".
Perspectives
Screening patients with a stiff spine, before total hip replacement, could be beneficial. The surgeon could therefore use specific techniques (muscle sparing) and implants (large diameter head, dual mobility) to reduce the risk of postoperative dislocation. This has to be assessed.
charles riviere
Read the Original
This page is a summary of: The influence of spine-hip relations on total hip replacement: A systematic review, Orthopaedics & Traumatology Surgery & Research, April 2017, Elsevier,
DOI: 10.1016/j.otsr.2017.02.014.
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