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KMID : 0376219810180020299
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Chonnam Medical Journal
1981 Volume.18 No. 2 p.299 ~ p.307
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Experimental Study on the Microvessels of the Peripheral Nerve after Neurolysis
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Abstract
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For surgical repair of the peripheral nerve injury the extensive mobilization of the injured parts and neurolysis are obligatory, with possible hazard to the microcirculation of local nerve structure. Generally the peripheral nerve receives blood supply from two vascular systems, the extra and the intrafascicular, which have an intimate interaction. The microcirculation is said to remain adequate unless the impairment of either the extrinsic or the intrinsic vascular supply reaches to a critical level. To investigate the influence of extensive internal neurolysis of the peripheral nerve on the microcirculation, microangiography was performed after infusion of india ink into abdominal aorta to reach the rat sciatic nerve and vascular structure of the nerve was observed with five weeks interval. Followings are the results.
Two definite, but closely interrelated vascular systems were noted in the normal sciatic nerve of the rat. After the internal neurolysis, marked decrease of the intrafascicular vasculature was observed during the first two weeks, but it seemed to be compensated by increase of the extrinsic vasculature. From the third week the intrinsic vasculature showed restoration almost to a normal state, and the hypervascularity and dilatation of vessels of extrinsic vasculature disappeared.
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