 Depo-Medrol 80 mg plus 1 cc of 4% preservative-free lidocaine was injected at the L4-5 level just as at the L5-S1 level. 
Depo - Medrol 80 mg plus 1 cc of 4 % preservative - free lidocaine was injected at the L4 - 5 level just as at the L5 - S1 level .