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为探讨继发性神经根粘连的预防问题，实验将２７条家犬分为Ａ、Ｂ、Ｃ三组。在腰间盘髓核摘除后，Ａ组创腔内滴入二甲基硅油１ｍｌ；Ｂ组在神经根表面放明胶海绵１／４块；Ｃ组做为对照。术后２、４、１２周将犬处死，进行大体形态观察、神经根活动范围测量和组织学观察。实验结果表明：二甲基硅油具有良好的预防继发性神经根粘连的作用。明胶海绵在吸收时伴有较多瘢痕组织形成，可加重神经根粘连。
In order to explore the prevention of secondary nerve root adhesion, 27 dogs were divided into A, B and C groups. In the lumbar disc nucleus removal, A group wound cavity injection of dimethyl silicone oil 1ml; B group on the nerve root release gelatin sponge 1/4 block; C group as a control. The dogs were sacrificed at 2, 4, 12 weeks after operation, and the general morphological observation, measurement of nerve root activity range and histological observation were performed. The experimental results show that: dimethyl silicone oil has a good effect of preventing secondary nerve root adhesion. Gelatin sponge in the absorption associated with more scar tissue formation, can aggravate nerve root adhesion.