Orthopedic Department, Cangzhou Second Peoples Hospital, Cangzhou, Hebei Province 060002, China;
Orthopedic Department, Cangzhou Second Peoples Hospital, Cangzhou, Hebei Province 060002, China;
Orthopedic Department, Cangzhou Second Peoples Hospital, Cangzhou, Hebei Province 060002, China;
Humerus; Fractures, comminuted; Exofixator;