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  2. Median nerve - Wikipedia

    en.wikipedia.org/wiki/Median_nerve

    The median nerve is a nerve in humans and other animals in the upper limb. It is one of the five main nerves originating from the brachial plexus. The median nerve originates from the lateral and medial cords of the brachial plexus, [1] and has contributions from ventral roots of C6-C7 (lateral cord) and C8 and T1 (medial cord). [1] [2]

  3. Anterior interosseous syndrome - Wikipedia

    en.wikipedia.org/wiki/Anterior_interosseous_syndrome

    The anterior interosseous nerve is a branch of the median nerve, with a large sensory branch to the wrist bones, which arises just below the elbow. It passes distally, anteriorly along the interosseous membrane and innervates flexor pollicis longus, flexor digitorum profundus to index and middle finger as well as pronator quadratus, and supplies sensory feedback from the wrist bones, i.e. the ...

  4. Thenar eminence - Wikipedia

    en.wikipedia.org/wiki/Thenar_eminence

    Due to a common interconnection between the median and ulnar nerves in the hand (Riche-Cannieu interconnection), the Median nerve may innervate the FPB in 35% of people. It is innervated by the Ulnar nerve in 50% of people and by both the median and ulnar nerves in 15%. The adductor pollicis is typically innervated by the ulnar nerve. There are ...

  5. Pronator teres syndrome - Wikipedia

    en.wikipedia.org/wiki/Pronator_teres_syndrome

    Compression of the median nerve in the region of the elbow or proximal part of the forearm can cause pain and/or numbness in the distribution of the distal median nerve, and weakness of the muscles innervated by the anterior interosseous nerve: the flexor pollicis longus ("FPL"), the flexor digitorum profundus of the index finger ("FDP IF"), and the pronator quadratus ("PQ").

  6. Median nerve palsy - Wikipedia

    en.wikipedia.org/wiki/Median_nerve_palsy

    For patients with low median nerve palsy, it has been shown that the flexor digitorum superficialis of the long and ring fingers or the wrist extensors best approximate the force and motion that is required to restore full thumb opposition and strength. This type of transfer is the preferred method for median nerve palsy when both strength and ...

  7. Muscles of the hand - Wikipedia

    en.wikipedia.org/wiki/Muscles_of_the_hand

    The median nerve innervates the flexors of the wrist and digits, the abductors and opponens of the thumb, the first and second lumbricals. The ulnar nerve innervates the remaining intrinsic muscles of the hand. [3] [4] All muscles of the hand are innervated by the brachial plexus (C5–T1) and can be classified by innervation: [1] [4] [5]

  8. Carpal tunnel syndrome - Wikipedia

    en.wikipedia.org/wiki/Carpal_tunnel_syndrome

    The median nerve provides feeling or sensation to the thumb, index finger, long finger, and half of the ring finger. At the level of the wrist, the median nerve supplies the muscles at the base of the thumb that allow it to abduct, move away from the other four fingers, as well as move out of the plane of the palm.

  9. Hand injury - Wikipedia

    en.wikipedia.org/wiki/Hand_injury

    This disorder results from compression of the median nerve in the wrist. Disorders like diabetes mellitus , thyroid or rheumatoid arthritis can narrow the tunnel and cause impingement of the nerve. Carpal tunnel syndrome also occurs in people who overuse their hand or perform repetitive actions like using a computer key board, a cashiers ...