Title
Biomechanical and neuromuscular adaptations during the landing phase of a stepping-down task in patients with early or established knee osteoarthritis Biomechanical and neuromuscular adaptations during the landing phase of a stepping-down task in patients with early or established knee osteoarthritis
Author
Faculty/Department
Faculty of Medicine and Health Sciences
Publication type
article
Publication
Oxford ,
Subject
Sociology
Economics
Human medicine
Source (journal)
The knee. - Oxford
Volume/pages
23(2016) :3 , p. 367-375
ISSN
0968-0160
ISI
000378963600006
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Background To compare the knee joint kinematics, kinetics and EMG activity patterns during a stepping-down task in patients with knee osteoarthritis (OA) with control subjects. Methods 33 women with knee OA (early OA, n = 14; established OA n = 19) and 14 female control subjects performed a stepping-down task from a 20 cm step. Knee joint kinematics, kinetics and EMG activity were recorded on the stepping-down leg during the loading phase. Results During the stepping-down task patients with established knee OA showed greater normalized medial hamstrings activity (p = 0.034) and greater vastus lateralis-medial hamstrings co-contraction (p = 0.012) than controls. Greater vastus medialis-medial hamstrings co-contraction was found in patients with established OA compared to control subjects (p = 0.040) and to patients with early OA (p = 0.023). Self-reported knee instability was reported in 7% and 32% of the patients with early and established OA, respectively. Conclusions The greater EMG co-activity found in established OA might suggest a less efficient use of knee muscles or an attempt to compensate for greater knee laxity usually present in patients with established OA. In the early stage of the disease, the biomechanical and neuromuscular control of stepping-down is not altered compared to healthy controls.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/d3162f/132117.pdf
E-info
https://repository.uantwerpen.be/docman/iruaauth/8bd101/132117.pdf
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