A 16-year-old boy fell from a motorcycle, and his radial nerve was severely damaged because of a fracture of the midshaft of the humerus. Which of the following conditions would most likely result from this accident?
Injury to the radial nerve results in: Loss of wrist extension - wrist drop. The median nerve innervates the: Pronator teres, Pronator quadratus, Opponens pollicis muscles and Skin over the ventral aspect of the thumb. The ulnar nerve innervates the dorsal interosseous muscles, which act to abduct the fingers.
Loss of wrist extension leading to wrist drop
Weakness in pronating the forearm
Sensory loss over the ventral aspect of the thumb
Inability to oppose the thumb
Muscles of arm and forearm region & Cubital fossa