Loss of flexion in the interphalangeal joint of thumb in supracondylar fracture is due to involvement of which nerve
(A) Anterior interosseous (B) Posterior interosseous (C) Median (D) Ulnar
(A) Flexion at IP joint of thumbs - by flexor pollicis longus Nerves that may be involved in supracondylar humerus : 1. Median nerve - most common Paial injury occurs usually. i.e. fibers involved in forming AIN branch. 2. Radial nerve - less often 3. Ulnar nerve - least commonly involved. AIN supply: Flexor pollicis longus * Lateral 1/2 of flexor digitorum profundus * Pronator quadratus