Palmar branch of the median nerve
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| Nerve: Palmar branch of the median nerve | |
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| Nerves of the left upper extremity. | |
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| Superficial palmar nerves. | |
| Latin | ramus palmaris nervi mediani |
| Gray's | subject #210 938 |
| From | median nerve |
| Dorlands / Elsevier |
r_02/12691347 |
The palmar branch of the median nerve is a branch of the median nerve which arises at the lower part of the forearm.
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[edit] 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 antibrachial cutaneous nerve.
- The medial branch supplies the skin of the palm and communicates with the palmar cutaneous branch of the ulnar.
[edit] 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.[1]
[edit] References
- ^ Ellis, Harold; Susan Standring; Gray, Henry David (2005). Gray's anatomy: the anatomical basis of clinical practice. St. Louis, Mo: Elsevier Churchill Livingstone, 700. ISBN 0-443-07168-3.
[edit] Additional images
 Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. |
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
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