Anatomic study of distally based pedicle compound flaps with nutrient vessels of the cutaneous nerves and superficial veins of the forearm.

ABSTRACT

The purpose of this study was to describe the anatomic basis for a distally based neurovenovascular pedicle compound flap, with nutrient vessels of the cutaneous nerves and superficial veins of the forearm. In this study, the origins, branches, and anastomoses of nutrient vessels of the cutaneous nerves and superficial veins of the forearm and their relationships with the blood supply of adjacent muscle, bone, and skin were assessed in 96 adult cadavers by perfusion of red gelatin into the superior limb arteries. The results showed that the nutrient vessels of cutaneous nerves and superficial veins of the forearm were found to have multiple origins, consisting of six longitudinal vascular plexuses and one transverse vascular plexus of the forearm, as follows 1) the anterior-lateral vascular plexus from cutaneous branches of the radial artery; 2) the anterior-medialis vascular plexus from cutaneous branches of the ulnar artery; 3) the dorso-lateral vascular plexus from radial osteal and cutaneous branches; 4) the dorso-medialis vascular plexus from ulnar osteal and cutaneous branches; 5) the radial vascular plexus from osteal and cutaneous branches of the radial artery, cutaneous branches of the radial artery in the upper wrist, recurrent branches of the styloid process of the radius, and the radialis vascular plexus of cutaneous branches of the tabatière anatomique (anatomical snuffbox); and 6) the ulnar lateral vascular plexus from cutaneous branches of the ulnar artery in the upper wrist and osteal and cutaneous branches. The transverse vascular plexus is composed of dorsal branches of the ulnar and radial arteries. These perforating branches give fascial branches, cutaneous branches, periosteal branches, and nutrient vessels of cutaneous nerves and superficial veins. These results suggest that nutrient vessels of the cutaneous nerves and superficial veins of the forearm have the same origins as those of the nutrient vessels of adjacent muscles, bones, and skin of the forearm, which can be designated as five types of distally based pedicle flaps with nutrient vessels of cutaneous nerves and superficial veins of the forearm, whose rotation point is at the wrist joint. This flap can be applied to repair tissues of distal parts of the hand.