Wrist

Flexion
Prime movers: Flexor carpi radialis & Flexor carpi ulnaris

Assisting:

Flexor digitorum superficialis

Flexor digitorum profundus

Palmaris longus

Flexor carpi radialis  (Median nerve) Median nerve injury

Flexor carpi ulnaris (Ulnar nerve) Ulnar nerve injury

Flexor digitorum superficialis (Median nerve) Median nerve injury

Flexor digitorum produndus (medial half: ulnar nerve, lateral half: median nerve)

Palmaris longus (Median nerve) Median nerve injury

Extension
Prime movers: Extensor carpi radialis longus/brevis &  Extensor carpi ulnaris

Assiting: Extensor digitorum

(Radial nerve) Radial nerve injury

Abduction
Prime movers: Flexor carpi radialis & Extensor carpi radialis longus/brevis & Extensor pollicis longus /brevis

Flexor carpi radialis (Ulnar nerve) Ulnar nerve injury

Extensor carpi radialis longus/brevis & Extensor pollicis longus/brevis (Radial nerve) Radial nerve injury

Adduction

Prime movers: Flexor/Extensor carpi ulnaris

Flexor carpi ulnaris (Ulnar nerve) Ulnar nerve injury

Extensor carpi ulnaris  (Radial nerve) Radial nerve injury