Fig. 5. Nerve injury score for sections obtained 10 mm caudal to the conus 4 days after administration of saline (▪), 2.5% lidocaine (□), or 10% lidocaine (▨), intrathecally or epidurally. Each fascicle was assigned an injury score of 0–3 (0 = normal, 1 = mild, 2 = moderate, 3 = severe). The injury score for each cross section was calculated as the average score of all fascicles in the section. Data are presented as mean ± SEM. *P < 0.05 compared with intrathecally administered normal saline and 2.5% lidocaine. #P < 0.05 compared with epidurally administered 10% lidocaine.