Fracture of the base of the first metacarpal

After ulnar nerve injury, the ulnar side of the hand, all the little fingers, and the ulnar side of the ring finger disappeared. The deep branch of the ulnar nerve is a motor branch, sometimes stabbed or penetrating. In the wrist, the ulnar nerve is vulnerable to lacerations. In the fingers and palms, the superficial branch of the ulnar nerve is also vulnerable to lacerations.