In-vivo 3-Dimensional gait symmetry analysis in patients with bilateral total hip arthroplasty

Although three-dimensional (3D) asymmetry has been reported in unilateral THA patients during gait, it is not well understood whether asymmetric hip kinematics during gait persist in bilaterally operated THA patients. The purpose of this study was to compare the in vivo 3D kinematics and component p...

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Bibliographic Details
Published in:Journal of biomechanics 2018-08, Vol.77, p.131-137
Main Authors: Arauz, Paul, Peng, Yun, MacAuliffe, John, Kwon, Young-Min
Format: Article
Language:English
Subjects:
Acetabular components
Acetabulum
Aged
Arthritis
Arthroplasty, Replacement, Hip
Asymmetry
Bilateral total hip arthroplasty
Biomechanical Phenomena
Biomechanics
Biomedical materials
Component positioning
Computed tomography
Dimensional analysis
Exercise Test
Female
Fitness equipment
Fluoroscopic imaging
Fluoroscopy
Gait
Gait Analysis
Hip
Hip joint
Hip Prosthesis
Humans
In vivo methods and tests
Joint surgery
Kinematics
Male
Middle Aged
Patients
Placement
Standard deviation
Surgical implants
Symmetry
Three dimensional models
Total hip arthroplasty
Translation
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Summary:Although three-dimensional (3D) asymmetry has been reported in unilateral THA patients during gait, it is not well understood whether asymmetric hip kinematics during gait persist in bilaterally operated THA patients. The purpose of this study was to compare the in vivo 3D kinematics and component placement between bilateral and unilateral THA patients during gait. Eight bilateral and thirty-three unilateral THA patients were evaluated for both hips during treadmill gait using a validated combination of 3D computer tomography-based modeling and dual fluoroscopic imaging system (DFIS). The in vivo 3D kinematics of the unilateral THA group was first assessed. The magnitudes of kinematics and component placement difference between implanted hips in the bilateral THA group and between the implanted and non-implanted hips in the unilateral THA group were compared. The study results showed asymmetric gait kinematics in the unilateral THA group. Although the magnitude of kinematics differences between sides for both the bilateral and unilateral THA groups did not change significantly for hip rotations (p > 0.05), the bilaterally operated THA group has significantly lower magnitude of hip gait translation difference. Significant reduction in the magnitude of the acetabular cup adduction, stem adduction, and combine hip anteversion and adduction difference was observed in the bilateral THA group (p 
ISSN:0021-9290
1873-2380
DOI:10.1016/j.jbiomech.2018.07.013