Carpal Channel

Carpal (or carpal) canal - (Latin canalis carpi [pna,bna,jna], Greek νευρωπάγος - urban canal; according to the type of wrist), also carpal groove, - a deep palmar longitudinal skin canal connecting each other through the superficial channels of the forearm branches of the ulnar nerve in the forearm and area of ​​the hand and thumbs. Develops from the mesoderm and contains venous sinuses. It occupies a horizontal position in the upper part of the forearm from the tubercle of the anterior scalene muscle to the pisiform bone, covered by the superficial and deep layers of the tendons of the palmaris muscles. The longitudinal opening of the canal is located at the bases of the middle phalanges of the V–III fingers when the arm is extended. The canal contains numerous deep digital arteries, which are divided into superficial and perforating. The canal also contains the flexor tendons passing from the forearm to the hand area, and the palmar interosseous vessels and nerve.