A cut injury on wrist causes inability of thumb to touch the tip of little finger, the nerve likely to be damaged is -

Median nerve supply in hand Flexor pollicis brevis Opponens pollicis Abductor pollicis brevis First two lumbricals A torn or cut tendon in the forearm, at the wrist, in the palm, or along the finger will make it impossible to bend one or more joints in a finger. ... Because the nerves to the fingers are also very close to the tendons, a cut may damage them, as well. This will result in numbness on one or both sides of the finger.