The intervention group will perform 30-45 minutes of home exercises consisting of stretching, mobility and strengthening, 4 days a week for 8 weeks, and the patients' compliance with the exercise will be monitored by phone call once a week.

Patients in the control group will be on the waiting list and will be taught hand exercises when the program ends.

30-45 minutes of home exercises consisting of stretching, mobility and strengthening

DAPSA; It is a composite measurement focused on peripheral arthritis, developed for reactive arthritis, adapted to PsA patients and frequently used, evaluating disease activity and response to treatment in clinical studies. There are four components of score including the parameters a) tender joint count (68 joints), b) swollen joint count (66 joints), c) CRP value (mg/l) and d) patient's disease activity and pain assessment (with a 10 cm visual analog scale). DAPSA scores are calculated by summing each of these components. Cut-off values for disease activity; A score of <4 was determined as remission, a score of <14 was determined as minimal disease activity, a score of <28 was determined as moderate disease activity, and a score of 28 was determined as high degree of disease activity.

Hand grip strength will be measured with a Jamar hydraulic hand dynamometer (Sammons Preston, USA). Grip tests will be performed in the standard position recommended by the American Association of Hand Therapists. This is the standard position; The patient is seated in a position that provides 90-20 degree flexion of the hip and knee, shoulder adduction, forearm neutral position, 90 degree flexion of the elbow, 0-30 degree extension of the wrist and 0-15 degree ulnar deviation. The measurement will be repeated three times. There will be a 15-second rest break at the end of each measurement. As a result, the average of three measurements will be recorded.

Fine grip strength measurements will be made with finger dynamometry (Pinchmeter-Sammons Preston, USA). Grip tests will be performed in the standard position recommended by the American Association of Hand Therapists. This is the standard position; The patient is seated in a position that provides 90 degrees of hip and knee flexion, shoulder adduction, forearm neutral position, 90 degree flexion of the elbow, 0-30 degree extension of the wrist and 0-15 degree ulnar deviation. Three different finger grips will be evaluated. These:

1- Fingertip grip strength, 2- Lateral grip strength, 3- Three point grip strength.

Measurements will be repeated three times. There will be a 15-second rest break at the end of each measurement. As a result, the average of three measurements will be recorded.

This is a device consisting of a square platform and a storage box. There are 9 holes in the square-shaped area and 9 cylinders suitable for these holes. The patient is asked to quickly take the 9 cylinders from the storage box, place them in the holes in random order, and quickly remove them from the holes without taking a break and place them in the storage box. Meanwhile, time is measured in seconds with a stopwatch. The test is performed 2 times consecutively for both hands and the average of the result is taken. The total test score is calculated by averaging the scores for both hands.