Microscopic anatomy of nevers and blood vessels of the finger distal phanlanx and its clinical significance / 中国基层医药

ABSTRACT

Objective To provide anatomical evidence for the repair of wounds of finger distal phalanx,espe-cially for the recovery of feeling. Methods 10 samples of fresh adult hand were dissected under microscope. The course,branches,distribution and external diameter of nerves and blood vessels in finger distal phalanx and morpho-logical relationship between nerves and vessels were measured. Results Proper palmar digital nerves mostly step over digital arteries at section starts of distal finger arterial arcades and go to finger pulps and latero-backs. Their thinks di-vide into 2 branches. Transverse diameters of interior and exterior branches are 0.8 ～ 1.2 mm and 0.9 ～ 1.4 mm re-spectively at liner semilunaris levels. Distributionsof left and right branches are reciprocal chiasmas. Conclusion Finger nerve mostly ramifies to finger pulp,finger tip and finger back at the level of phalangette bottom. Its branches are lower and thinner than concomitant arteries. The suitable anatomy region for anastomosis of nerves and blood ves-sels is the middle1/3 section from the distal interphalangeal joint to the nail during replanation of amputated finger pa-ratelum.