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Palmar branch of the median nerve

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From
  
median nerve

Dorlands /Elsevier
  
r_02/12691347

Palmar branch of the median nerve

Latin
  
ramus palmaris nervi mediani

The palmar branch of the median nerve is a branch of the median nerve which arises at the lower part of the forearm.

Contents

Branches

It pierces the palmar carpal ligament, and divides into a lateral and a medial branch;

  • The lateral branch supplies the skin over the ball of the thumb, and communicates with the volar branch of the lateral antebrachial cutaneous nerve.
  • The medial branch supplies the skin of the palm and communicates with the palmar cutaneous branch of the ulnar.

    • Clinical significance

    Unlike most of the median nerve innervation of the hand, the palmar branch travels superficial to the Flexor retinaculum of the hand. Therefore, this portion of the median nerve usually remains functioning during carpal tunnel syndrome.

    References

    Palmar branch of the median nerve Wikipedia
    (Text) CC BY-SA