Palmar cutaneous branch of the median nerve

From Ganfyd

Jump to: navigation, search

The palmar cutaneous nerve is a branch of the median nerve.

Palmar cutaneous branch of the median nerve

System:
Function:
Origin: Median nerve
Branches:
Insertion:
Arterial supply:
Venous drainage:
Lymphatic drainage:
Innervation: Lateral palmar skin
Vertebral levels:
Search for Palmar cutaneous branch of the median nerve in Gray's.


Contents

Anatomical Course

The nerve originates proximal to the flexor retinaculum, piercing it (or the deep fascia) to divide into two branches.

Sensory Supply

  • The medial branch supplies the skin of the central palm.
  • The lateral branch supplies the skin of the thumb and thenar eminence.

Communications

Clinical Relevance

  • Helps to determine the level of a median nerve injury; loss of sensation in the lateral palm may indicate a high lesion, whilst intact sensation with loss of function in the recurrent and palmar digital branches may indicate a more distal lesion e.g. in the carpal tunnel (this is not entirely reliable due to the anatomical variations).

Variations

Personal tools