Patients referred to the Hand Rehabilitation Unit of Gazi University, Faculty of Health Sciences, for physiotherapy and rehabilitation due to hand-related pathologies, and who meet the inclusion and exclusion criteria, will be informed about the study. No treatment other than routine care will be administered. Only two evaluations will be conducted: one at the first session and the other at the end of the 6th week.

This study aimed to assess whether the non-dominant hand function changes in patients using splints or casts on their dominant hand during the tissue healing period.

Hand function will be assessed using the Jebsen Taylor Hand Function Test (JTHFT), a valid tool for evaluating impairment and disability. The test includes tasks involving common grip types in daily life, aiming to measure the speed of task performance. Standardized materials, easily available in clinics, are used. The test has seven tasks: writing a 24-letter text, turning cards, collecting small objects, eating, stacking checkers, collecting light wide objects, and collecting heavy wide objects. A 1-minute rest is given between tasks, and completion time is recorded in seconds. Before evaluation, examples will be provided, and individuals will perform a trial run of each task. In our study, only the unaffected, non-dominant hand will be assessed, starting with a single real assessment after the trial.

Disabilities of the Arm, Shoulder and Hand (DASH) Questionnaire will be measured. This questionnaire is used to assess upper extremity disorders and includes 30 items covering pain, stiffness, weakness, daily activities, and functionality. Patients consider their condition over the past week, with total scores ranging from 0 to 100. Higher scores indicate worse functional status.