Knee joint stiffness during walking in knee osteoarthritis

Dixon, Sharon J., Hinman, Rana S., Creaby, Mark W., Kemp, Georgina and Crossley, Kay M. (2010) Knee joint stiffness during walking in knee osteoarthritis. Arthritis Care and Research, 62 1: 38-44. doi:10.1002/acr.20012

Author Dixon, Sharon J.
Hinman, Rana S.
Creaby, Mark W.
Kemp, Georgina
Crossley, Kay M.
Title Knee joint stiffness during walking in knee osteoarthritis
Journal name Arthritis Care and Research   Check publisher's open access policy
ISSN 2151-464X
Publication date 2010-01
Sub-type Article (original research)
DOI 10.1002/acr.20012
Volume 62
Issue 1
Start page 38
End page 44
Total pages 7
Place of publication Hoboken, NJ United States
Publisher John Wiley and Sons
Language eng
Formatted abstract
To investigate the construct validity of walking knee stiffness as a measure to differentiate between individuals with and without knee osteoarthritis (OA) and the construct validity of walking knee stiffness as related to self-reported knee stiffness. The contributors to walking stiffness and its relationship with loading rate and adduction moment are also investigated.
Thirty-seven individuals with knee OA and 11 asymptomatic controls participated. Knee stiffness was calculated during walking as the change in knee flexion-extension moment divided by the change in knee flexion angle. Forward-stepwise regression models and Pearson's correlation coefficients were used to evaluate the relationships between variables.
Knee stiffness in walking was significantly greater in the OA group (mean ± SD 10.1 ± 4.4 Nm/°/kg × 100) compared with the controls (mean ± SD 5.6 ± 1.5 Nm/°/kg × 100) (P < 0.001). Knee excursion range explained 39% of the variance in walking knee stiffness (B = −0.736, P < 0.001) and knee extensor moment a further 7% (B = 6.974, P = 0.045). In the OA group, walking knee stiffness was not associated with self-reported stiffness (r = 0.029; P = 0.863). For the OA group, greater self-reported stiffness was associated with lower peak knee adduction moment (B = −0.354, P < 0.001).
The construct validity of walking knee stiffness is supported. The poor correlation between walking stiffness and self-reported stiffness suggests the 2 measures evaluate different aspects of knee stiffness. Since a measure of walking stiffness is likely to provide valuable information, future research evaluating its clinical significance is merited.
Keyword Tibiofemoral Osteoarthritis
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Health and Rehabilitation Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 13 times in Thomson Reuters Web of Science Article | Citations
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