The stiffness of the hand when getting up in the morning after radius fracture may be due to less activity, nerve injury and local adhesion. 1. Less activity: After radius fracture, if the affected part of the patient is immobilized by the brace for a long time, less activity, then the symptoms of muscle atrophy and stiffness may occur. Functional exercises can be carried out under the guidance of the doctor to alleviate the symptoms of stiffness. 2. Nerve damage: After radius fracture, it may cause nerve damage in the relevant parts of the affected area, which may lead to muscle contracture, muscle atrophy and weakness, resulting in stiffness. 3. Localized adhesion: after the fracture trauma, the broken bone fragments may cause damage to the surrounding tissues, resulting in the formation of adhesion and muscle stiffness. If your hand is stiff in the morning after radius fracture, you should go to the hospital in time for examination and treatment under the guidance of the doctor.