Wrist flexion

Patients with humeral and epicondylar fractures have limited elbow motion, weakness of forearm pronation, wrist flexion, and flexion of fingers. Humeral epicondylar fracture is the most common type of elbow injury, accounting for about 10% of elbow fractures, second only to supracondylar fractures and humeral condylar fractures, accounting for the third place in elbow injuries. Fractures occur in adolescents and children. In this age group, the epicondyle of the humerus belongs to the epiphysis and has not yet been fused with the lower end of the humerus, so it is easy to avulsion.