Pronator quadratus has same innervation as following muscles-
Pronator quadratus is supplied by anterior interosseous nerve which is a branch of median nerve. This anterior interosseous nerve supplies deep muscles of anterior forearm: Flexor pollicis longus Lateral half of Flexor digitorum profundus of index & middle fingers Pronator quadratus. Flexor digitorum superficialis supplied by median nerve Palmaris longus supplied by median nerve Flexor carpi ulnaris supplied by ulnar nerve
Flexor pollicis longus
Flexor digitorum superficialis
Palmaris longus
Flexor carpi ulnaris
Muscles of arm and forearm region & Cubital fossa