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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. 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]

  4. Muscles of the thumb - Wikipedia

    en.wikipedia.org/wiki/Muscles_of_the_thumb

    It is innervated by the ulnar nerve in 50% of people and by both the median and ulnar nerves in 15%. The opponens pollicis originates on the tubercle of the trapezium and the flexor retinaculum. It is inserted onto the radial side of the first metacarpal. It opposes the thumb and assists in adduction. It is innervated by the median nerve. [6]

  5. Cutaneous innervation of the upper limbs - Wikipedia

    en.wikipedia.org/wiki/Cutaneous_innervation_of...

    Cutaneous innervation of the upper limbs is the nerve supply to areas of the skin of the upper limbs (including the arm, forearm, and hand) which are supplied by specific cutaneous nerves. Modern texts are in agreement about which areas of the skin are served by which cutaneous nerves, but there are minor variations in some of the details.

  6. Carpal bones - Wikipedia

    en.wikipedia.org/wiki/Carpal_bones

    In human anatomy, the main role of the carpal bones is to articulate with the radial and ulnar heads to form a highly mobile condyloid joint (i.e. wrist joint), [1] to provide attachments for thenar and hypothenar muscles, and to form part of the rigid carpal tunnel which allows the median nerve and tendons of the anterior forearm muscles to be ...

  7. Thenar eminence - Wikipedia

    en.wikipedia.org/wiki/Thenar_eminence

    The ulnar nerve is exclusively responsible for the innervations of the hypothenar eminence. Both nerves contribute to the innervations of the midpalmar group. [8] The innervation of these muscles by the median nerve is unusual, as most of the intrinsic muscles on the palm of the hand are supplied by the ulnar nerve.

  8. Carpal tunnel - Wikipedia

    en.wikipedia.org/wiki/Carpal_tunnel

    In the human body, the carpal tunnel or carpal canal is a flattened body cavity on the flexor (palmar/volar) side of the wrist, bounded by the carpal bones and flexor retinaculum. It forms the passageway that transmits the median nerve and the tendons of the extrinsic flexor muscles of the hand from the forearm to the hand. [1]

  9. Recurrent branch of the median nerve - Wikipedia

    en.wikipedia.org/wiki/Recurrent_branch_of_the...

    The recurrent branch of the median nerve is also colloquially called the "Million Dollar Nerve", because injury to this nerve during carpal tunnel surgery can lead to a million dollar lawsuit. Injury to this nerve can lead to loss of function of the thumb. Such injury can happen if the flexor retinaculum is transected too radially. The ...

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