Effect of polylactic acid glue in preventing epidural scar adhesion after laminectomy in rabbits

作     者：刘立岷 宋跃明 段宏 丁永利 卢冰 

作者机构：Department of OrthopedicsWest China Hospital of Sichuan UniversityChengdu 610041China 

出 版 物：《Chinese Journal of Traumatology》 (中华创伤杂志（英文版）)

年 卷 期：2006年第9卷第3期

页      面：146-151页

学科分类：1002[医学-临床医学] 100210[医学-外科学(含：普外、骨外、泌尿外、胸心外、神外、整形、烧伤、野战外)] 10[医学] 

主　　题：Laminectomy Dura mater Rabbits Polylactic acid glue 

摘      要：Objective： To determine the efficacy of polylactic acid glue in preventing epidural scar adhesion after laminectomy in rabbits. Methods： Twenty-four Japanese white rabbits underwent laminectomy （including the attached ligaments） at Lz and Ls. After laminectomy at Ls, polylactic acid glue was sprayed on the dura and nerve roots and this segment was taken as the experimental group. After laminectomy at Lz, nothing was used and this segment was enrolled as the self control group. Four rabbits were killed every two weeks postoperatively till the end of the experiment at 12 weeks. Then the operated spine was observed grossly, histologically and ultrastructurally to check the degree of scar formation, the status of epidural scar adhesion, the absorption of the glue, and the intraceHular structure of fibroblasts. Results： The glue coagulated immediately after spraying and showed excellent hemostatic effect. The glue membrane was easy to be taken away from the dura mater of the samples for 2 weeks and there were no cells in the epidural space in the experimental group. But the dura mater was covered by hematoma in the control group,which formed mild adhesion, with fibroblasts proliferating actively. In the 4th week, some glue shivers remained in the epidural space with fibroblasts increasing a little, and the dura mater was smooth in the experimental group. However, in the control group, the formed scar was fragile and conglutinated with the dura mater diffusely and fibroblasts were much more than those in the experimental group. In the 6th-12th weeks, there was a potential interspace between the scar and the dura mater, and the polylactic acid glue was absorbed completely in the experimental group. Much tough scar was found in the control group, which was very difficult to dissect from the dura mater and the surrounding tissues. From the ultrastructural observation of the fibroblasts, the nucleus became much bigger and the rough endoplasmic reticulum was much more plenti