Hip joint mechanics during walking in individuals with mild-to-moderate hip osteoarthritis.
The purpose of this case-control study was to characterise hip joint kinematics and moments during gait in people with mild-to-moderate hip osteoarthritis (OA). Eligible participants were allocated to the hip OA group (n=27) or the age-matched control group (n=26) based on radiographic and symptomatically defined inclusion criteria. Participants walked barefoot along a 10-m walkway at their self-selected gait speed. Trajectories of 43 markers attached to the trunk, pelvis, upper and lower limbs were recorded using a 12-camera motion capture system. Ground reaction force data were simultaneously collected. Individuals in the hip OA group had a 10% higher body mass, 13% slower self-selected walking speed, 10% shorter step length, 2% and 9% longer relative stance and double support duration (% stride) respectively, 41% lower sagittal plane hip range of motion, and 28% and 45% lower peak sagittal and transverse plane hip joint moments respectively during gait compared to controls (p<0.05). The finding that individuals with mild-to-moderate hip OA experienced less net hip joint loading over a reduced range of hip motion for a longer proportion of the gait cycle when walking at their preferred gait speed suggest that the mechanics of the hip joint are altered in hip OA, and could have implications for disease progression through altered mechano-biological processes within the joint.
School of Allied Health Sciences and Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, 4222, Queensland, Australia; School of Physiotherapy, Faculty of Health Sciences, Australian Catholic University, Banyo, Brisbane, Australia. Electronic address: maria.constantinou@acu.edu.au.
Maria
M
Constantinou
School of Allied Health Sciences and Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, 4222, Queensland, Australia. Electronic address: aderson@praxis.esp.br.
Aderson
A
Loureiro
School of Allied Health Sciences and Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, 4222, Queensland, Australia; Children's Health Queensland, Brisbane, Australia. Electronic address: c.carty@griffith.edu.au.
Christopher
C
Carty
School of Allied Health Sciences and Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, 4222, Queensland, Australia. Electronic address: p.mills@y7mail.com.
Peter
P
Mills
School of Allied Health Sciences and Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, 4222, Queensland, Australia. Electronic address: r.barret@griffith.edu.au.
Rod
R
Barrett
D001696:Biomechanical Phenomena; D016022:Case-Control Studies; D005260:Female; D005684:Gait; D006621:Hip Joint / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000503:physiopathology*; D016059:Range of Motion, Articular; D012720:Severity of Illness Index; D016138:Walking
Gait; Hip joint mechanics; Hip osteoarthritis; Kinematic; Kinetic; Mild-to-moderate