The inability to turn the hand upward after a distal radius fracture may be due to misalignment of the inferior ulnar-radial joint, joint stiffness, contracture, and complications of the fracture. 1. Dislocation of the inferior ulnar-radial joint: A fracture of the distal radius may cause the rotator joint of the distal radius, the inferior ulnar-radial joint, to become dislocated, resulting in limited rotation and an inability to turn the hand upward. 2. Joint stiffness and contracture: If no functional training is done after the fracture, severe joint stiffness, joint contracture, tissue swelling, etc. may occur, thus resulting in the inability to turn the hand and the inability to turn the palm upward. 3. Fracture complications: A variety of complications may be found after distal radius fracture, such as ulnar-radial joint instability and ulnar-radial joint separation, which may lead to structural abnormality of the ulnar-radial joint and the symptom of inability to turn and rotate the hand. After the distal radius fracture can’t turn the hand upward, it is recommended that the patient go to the hospital in time for examination to clarify the cause in order to take corresponding treatment measures.