Methods : after cultured scs combined with fn were grafted into hemi - resected lumbar spinal cords of adult rats , we used surface recording of spinal cord evoked potential ( scep ) and image analysis system to compare the latent period of scep and count the axon number between the therapeutic group and the control group 方法：将体外培养的雪旺细胞结合纤连蛋白植入大鼠半切损伤的脊髓内，用脊髓诱发电位及图像分析方法比较治疗组和对照组诱发电位潜伏期，再生轴突计数及二者间的关系。
