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Old 21st October 2006, 06:58 AM
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Default Rheumatoid arthritis

Regionalised centre of pressure analysis in patients with rheumatoid arthritis.
Clin Biomech (Bristol, Avon). 2006 Oct 17;
Semple R, Turner DE, Helliwell PS, Woodburn J
Quote:
BACKGROUND: Rheumatoid arthritis patients alter their gait pattern to compensate for painful foot symptoms. The centre of pressure may be a useful indicator of these altered loading patterns. Our purpose was to undertake a comparison of the regionalised duration and velocity of the centre of pressure between rheumatoid arthritis patients with foot impairments and healthy able-bodied adults.

METHODS: The progression of the centre of pressure through the foot, heel, midfoot, forefoot and toe regions was measured using an EMED-ST pressure platform. Patients walked at self selected cadence. Variables analysed were the average and maximum velocity and the duration of the centre of pressure (as % stance).

RESULTS: In comparison with able-bodied adults, rheumatoid arthritis patients had a statistically significant decrease in the average velocity of the centre of pressure in the total foot (P<0.001), heel (P=0.001) and midfoot (P<0.001) regions. The maximum velocity of the centre of pressure was slower in rheumatoid arthritis patients in only the midfoot region (P=0.002). During stance, the duration of the centre of pressure was longer in the midfoot (P<0.001) and shorter in the forefoot (P=0.001) in the rheumatoid arthritis patients.

INTERPRETATION: Alteration of the foot loading patterns in patients with rheumatoid arthritis can be characterised by changes to the centre of pressure patterns. Off-loading the painful and deformed forefoot was a characteristic feature in this patient cohort.
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