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Objectives. In order to more detailed assessment of grip strength an innovative electronic dynamometer system is produced and a new dynamic parameters of hand grip are derived. The aim of this study was to determine the connection between the new evaluation parameters of hand grip with measures of functional ability and disease activity in patients with rheumatoid arthritis (RA). Patients and methods. The study included 43 consecutive RA patients and 45 healthy participants. The main outcomes were the dynamometric parameters of the handgrip: strength, velocity, endurance (fatigue) and functional capacity. DAS28 (CRP) is used in the assessment of disease activity, and functional ability is assessed by modified HAQDI and ABILHAND-RA questionnaires. Based on the hand radiogram Steinbrocker score was calculated, and the JAM scale was used to estimate deformities. Results. A positive correlation was shown between the ABILHAND-RA and dynamometric parameters. Measures of disease activity (PhGA, PtGA, tender joint count, morning stiffness) were associated with grip force and functional potential (DAS28, PhGA, tender joint count, morning stiffness). There was no association between grip velocity and measures of functional ability and disease activity. Conclusion. Evaluation of hand function with a new electronic dynamometer is useful in assessment of patients with RA. |
