Hurley, Lloyd A.
February 1957
Angiology;Feb1957, Vol. 8 Issue 1, p19
Academic Journal
Normal angioarchitecture and changes which occur in the vascular structure following freezing injury in the hind limb of the rabbit have been demonstrated by preparing plastic casts of the vascular tree and by taking angiographs in which metallic mercury is used as a contrast medium. Normally, the plantar arch�a branch of the saphenous artery of the rabbit�appears to be of greater importance in maintaining a blood supply to the foot than is the deep plantar arch�a branch of the posterior tibial artery. The saphenous artery does not exist in man. The digits of the rabbit foot are supplied by plantar metatarsal arteries and dorsal metatarsal arteries which arise respectively from the plantar and dorsal arches. The two inner digits receive four major arterial vessels, but the lateral and medial digits receive only three major arterial vessels. The opening up of side branches and the development of new capillary outgrowths subsequent to freezing injury results in a thick network of blood vessels in areas where recovery is taking place. Revascularization occurs as early as three days after cold injury and appears to be quite significant in the healing process. This study emphasizes the important role played by the vascular system in the recovery process following freezing injury. If recovery is to occur, it is of prime importance to maintain vascular integrity.


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