The Effect of Psoriatic Arthritis on the Functions of the Hand

Disease Activity Score 28 was used to determine the disease activity of patients with PsA. Grip strength was measured with the help of Baseline Digital Hand Dynamometer®. Pinch strength was measured with Baseline Hydraulic Pinch Gauge®. Wrist proprioception was assessed by measuring the joint position sensation using a goniometer by actively repeating the target angle predetermined by the researcher (30 ° for flexion and extension, 15 ° for ulnar deviation, 10 ° for radial deviation. Finger skills were assessed using a mobile application called Ball Tap©. The application included the fastest contact of the participants to the balls coming from different parts of the screen for 30 seconds. Two hand coordination and skills were evaluated using the Purdue Pegboard test. The Michigan Hand Outcomes Questionnaire was used for functional evaluation of the hand, and the Health Assessment Questionnaire was used to assess the general functional condition and health-related quality of life.