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KMID : 0376219820190030267
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Chonnam Medical Journal
1982 Volume.19 No. 3 p.267 ~ p.275
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Experimental Study on the Change of Local Blood Supply following Peripheral Nerve Graft
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Abstract
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Nerve graft is one of the procedures to be used to overcome a large gap of the peripheral nerve injury. Of many factors involved to be consistent with the good results, survival of the graft nerve is the most important one. The grafting procedure itself inevitably deprives the graft of its blood supply for a certain period of time and its optimal survival depends on the time of restoration of local blood supply to the graft. To investigate the change of blood supply to the graft nerve, an experimental study was performed on the sciatic nerve of the rats and the change of local vascularity was observed by microangiography with india ink. Followings are the results.
1. The vascular system of the graft nerve, that is, the epineurial, perineurial, and endoneurial, were restored to a normal level at the fourth week after graft. Hypervascularity occurred thereafter to reach its peak at the eighth week.
2. Hypervascularity was more evident at the anastomotic site than at the midportion of the graft nerve.
3. Restoration of the intraneural vascular system showed a diffuse distribution, like branches of a tree, but not in between the fascicles as seen in normal nerve.
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