Lack of correlation between hip osteoarthritis and anatomical spinopelvic parameters obtained in supine position on MRI

Wintermeyer, Elke; Lorbeer, Roberto; Hefferman, Gerald; Schlett, Christopher L.; Peters, Annette; Rospleszcz, Susanne; Kiefer, Lena S.; Nikolaou, Konstantin; Bamberg, Fabian; Walter, Sven

doi:10.1016/j.injury.2022.11.056

Cited by 2 publications

(1 citation statement)

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“…In the adult population, atypical pelvic postures produce consequences to the stability of the hip after arthroplasty, contributing further to imbalance of sagittal spinopelvic parameters [15, 16]. Furthermore, high pelvic incidence has been suggested to contribute to excessive loading on the femoral head cartilage leading to osteoarthritis of the hip [44, 54, 55]. Regarding SCFE, osteoarthritis has remained a problematic sequealae in young adult patients who experienced severe slip or surgical pinning to repair the proximal femoral physis [56, 57].…”

Section: Discussionmentioning

confidence: 99%

Biomechanical Implications of Spinopelvic Alignment on Femoral Head Cartilage and the Proximal Femoral Physis in Slipped Capital Femoral Epiphysis: A Theoretical Finite Element Analysis

Kumaran,

Mumtaz,

Quatman

et al. 2024

Preprint

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Background Slipped capital femoral epiphysis (SCFE) is a prevalent pediatric hip disorder. Recent studies suggest the spine's sagittal profile may influence the proximal femoral growth plate's slippage, an aspect not extensively explored. This study utilizes finite element analysis to investigate how different spinopelvic alignments affect shear stress and potential slippage at the growth plate. Methods A finite element model was developed from CT scans of a healthy adult male lumbar spine, pelvis, and femurs. The model was subjected to various sagittal alignments through rotational boundary conditions. Simulations of two-leg stance, one-leg stance, walking heel strike, ascending stairs heel strike, and descending stairs heel strike were conducted. Parameters measured included hip joint contact area, stress, and maximum Tresca (shear) stress on the growth plate. Findings Posterior pelvic tilt cases indicated larger shear stresses compared to the anterior pelvic tilt variants except in two leg stance. Two leg stance resulted in decreases in the posterior tilted pelvi variants compared to anterior tilted pelvi, however a combination of posterior pelvic tilt and high pelvic incidence indicated larger shear stresses on the growth plate. One leg stance and heal strike resulted in higher shear stress on the growth plate in posterior pelvic tilt variants compared to anterior pelvic tilt, with a combination of posterior pelvic tilt and high pelvic incidence resulting in the largest shear stress. Interpretation Our findings suggest that posterior pelvic tilt and high pelvic incidence can lead to increased shear stress at the growth plate. Activities performed in patients with these alignments may predispose to biomechanical loading that shears the growth plate, potentially causing slippage.

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