Imperial College London
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Mr. Gareth G. Jones

Faculty of Medicine, Department of Surgery & Cancer

Clinical Senior Lecturer in Orthopaedic Surgery
 
 
 
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Contact

 

+44 (0)20 7594 5465g.g.jones

 
 
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Location

 

203Sir Michael Uren HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wiik:2017:10.5312/wjo.v8.i4.322,
author = {Wiik, AV and Aqil, A and Brevadt, M and Jones, G and Cobb, J},
doi = {10.5312/wjo.v8.i4.322},
journal = {World Journal of Orthopedics},
pages = {322--328},
title = {Abnormal ground reaction forces lead to a general decline in gait speed in knee osteoarthritis patients.},
url = {http://dx.doi.org/10.5312/wjo.v8.i4.322},
volume = {8},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - AIM: To analyse ground reaction forces at higher speeds using another method to be more sensitive in assessing significant gait abnormalities. METHODS: A total of 44 subjects, consisting of 24 knee osteoarthritis (OA) patients and 20 healthy controls were analysed. The knee OA patients were recruited from an orthopaedic clinic that were awaiting knee replacement. All subjects had their gait patterns during stance phase at top walking speed assessed on a validated treadmill instrumented with tandem force plates. Temporal measurements and ground reaction forces (GRFs) along with a novel impulse technique were collected for both limbs and a symmetry ratio was applied to all variables to assess inter-limb asymmetry. All continuous variables for each group were compared using a student t-test and χ(2) analysis for categorical variables with significance set at α = 0.05. Receiver operator characteristics curves were utilised to determine best discriminating ability. RESULTS: The knee OA patients were older (66 ± 7 years vs 53 ± 9 years, P = 0.01) and heavier (body mass index: 31 ± 6 vs 23 ± 7, P < 0.001) but had a similar gender ratio when compared to the control group. Knee OA patients were predictably slower at top walking speed (1.37 ± 0.23 m/s vs 2.00 ± 0.20 m/s, P < 0.0001) with shorter mean step length (79 ± 12 cm vs 99 ± 8 cm, P < 0.0001) and broader gait width (14 ± 5 cm vs 11 ± 3 cm, P = 0.015) than controls without any known lower-limb joint disease. At a matched mean speed (1.37 ± 0.23 vs 1.34 ± 0.07), ground reaction results revealed that push-off forces and impulse were significantly (P < 0.0001) worse (18% and 12% respectively) for the knee OA patients when compared to the controls. Receiver operating characteristic curves analysis demonstrated total impulse to be the best discriminator of asymmetry, with an area under the curve of 0.902, with a cut-off
AU  - Wiik,AV
AU  - Aqil,A
AU  - Brevadt,M
AU  - Jones,G
AU  - Cobb,J
DO  - 10.5312/wjo.v8.i4.322
EP  - 328
PY  - 2017///
SN  - 2218-5836
SP  - 322
TI  - Abnormal ground reaction forces lead to a general decline in gait speed in knee osteoarthritis patients.
T2  - World Journal of Orthopedics
UR  - http://dx.doi.org/10.5312/wjo.v8.i4.322
UR  - http://www.ncbi.nlm.nih.gov/pubmed/28473960
UR  - http://hdl.handle.net/10044/1/48365
VL  - 8
ER  -
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