Elbow: Supracondylar fracture of humerus- Weakened wrist flexion (with ulnar deviation)- Loss of pronation- Loss of digital flexion of lateral 3 digits resulting in the inability to make a complete fist, "hand of benediction"- Loss of thumb opposition (opponens pollicis muscle); sign is ape hand- Loss of first 2 lumbricals- Thenar atrophy- Sensory loss of palmar surface of the lateral hand and the palmar surfaces of the lateral 3¹/₂ digitsA lesion of median nerve at elbow results in the "hand of benediction" and "ape hand."

Wrist: carpal tunnel or laceration- Loss of thumb opposition (opponens pollicis muscle); sign is ape hand- Loss of first 2 lumbricals- Thenar atrophy- Sensory loss of the palmar surfaces of lateral 3¹/₂ digits. Note sensory loss on lateral palm may be spared.Lesions of median nerve at the wrist present without benediction hand and with normal wrist flexion, digital flexion, and pronation.