Evaluation of Pain, Upper Extremity Function, and Social Appearance Anxiety in Adults With Obstetric Brachial Plexus Palsy Who Underwent Shoulder Tendon Transfer Surgery

Inclusion and Exclusion Criteria Inclusion Criteria for Individuals With Brachial Plexus Birth Palsy: * Being between 18 and 40 years of age. * Having a diagnosis of unilateral brachial plexus birth palsy. * Having undergone shoulder tendon transfer surgery using the Modified Hoffer Technique. * Having at least 5 years elapsed since the last surgery. * Having a cognitive and communication level sufficient to comply with the assessment process. * Agreeing to participate voluntarily in the study and signing the informed consent form. Inclusion Criteria for Healthy Individuals: * Being between 18 and 40 years of age. * Having no history of upper extremity-related surgery within the last 5 years. * Having a cognitive and communication level sufficient to comply with the assessment process. * Agreeing to participate voluntarily in the study and signing the informed consent form. Exclusion Criteria for All Participants: * Having a neurological disease. * Having another orthopedic problem or a history of trauma in the affected upper extremity. * Having a history of systemic disease requiring an acute attack or hospitalization within the last 3 months. * Pregnancy or being less than 6 months postpartum.