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:將體外培養(yǎng)的雪旺細(xì)胞結(jié)合纖連蛋白植入大鼠半切損傷的脊髓內(nèi),用脊髓誘發(fā)電位及圖像分析方法比較治療組和對(duì)照組誘發(fā)電位潛伏期,再生軸突計(jì)數(shù)及二者間的關(guān)系。