Gluteal tendinopathy and hip osteoarthritis: Different pathologies, different hip biomechanics

Publication date: Available online 12 February 2018
Source:Gait & Posture
Author(s): Kim Allison, Michelle Hall, Paul W. Hodges, Tim V. Wrigley, Bill Vicenzino, Yong-Hao Pua, Ben Metcalf, Alison Grimaldi, Kim L. Bennell
BackgroundGluteal tendinopathy (GT) and hip osteoarthritis (OA) are the most common causes of hip pain and associated disability in older adults. Pain and altered walking biomechanics are common to both conditions. This study aimed to compare three-dimensional walking biomechanics between individuals with unilateral, symptomatic GT and HOA.MethodsSixty individuals with symptomatic unilateral GT confirmed by magnetic-resonance-imaging and 73 individuals with symptomatic unilateral HOA (Kellgren-Lawrence Grade ≥ 2) underwent three-dimensional gait analysis. Maximum and minimum values of the external hip flexion moment, first peak, second peak and mid-stance minimum of the hip adduction moment (HAM), sagittal plane hip excursion and hip joint angles, pelvic obliquity and trunk lean, at the three HAM time points during stance phase of walking were compared between groups using an analysis of covariance.ResultsCompared to individuals with HOA, those with GT exhibited a greater hip peak extension moment (P < 0.001) and greater HAM throughout the stance phase of walking (P = 0.01–P < 0.001), greater hip adduction (P < 0.001) and internal rotation (P < 0.01–P < 0.001) angles and lower hip flexion angles and excursion (P = 0.02 – P < 0.001). Individuals with HOA exhibited a greater forward trunk lean (P ≤ 0.001) throughout stance, and greater ipsilateral trunk lean in the frontal plane (P < 0.001) than those with GT.ConclusionDespite presence of pain in both conditions, hip kinematics and kinetics differ between individuals with symptomatic unilateral GT and those with symptomatic unilateral HOA. These condition-specific impairments may be targets for optimization of management of HOA and GT.



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