Article

Balance between flexor and extensor muscle activity is essential for
optimal function. The purpose of this pilot study was to compare the relationship
between maximum finger flexion force and maximum finger extension force in women
with rheumatoid arthritis and healthy women. Methods: Twenty healthy women
(median age 61 years) and 20 women with rheumatoid arthritis (median age 59.5
years, median disease duration 16.5 years) were included in the study. Finger
extension force was measured with an electronic device, EX-it, and finger flexion
force using Grippit. The Grip Ability Test and the score from the
patient-reported outcome Disability Arm Shoulder and Hand were used to evaluate
activity limitations. Results: Patients with rheumatoid arthritis showed
significantly decreased hand function compared with healthy controls. A
correlation was found between extension force and flexion force in the healthy
group (raeuro per thousand=aeuro per thousand0.65, paeuro per thousand=aeuro per
thousand0.002), but not in the rheumatoid arthritis group (raeuro per
thousand=aeuro per thousand0.25, paeuro per thousand=aeuro per thousand0.289).
Conclusion: Impaired hand function appears to influence the relationship between
maximum finger flexion and extension force. This study showed a difference in the
relationship between maximum finger flexion and extension force in healthy
controls and those with rheumatoid arthritis.

Langue : ANGLAIS