<prompt> The nerve root blocked in pudendal nerve blockL2-3L2-4S2-4L5, S1  <response>: Pudendal nerve block, blocks sacral segments S2-4 thus provides perineal analgesia. The anesthesia is produced by blocking the pudendal nerves near the ischial spine of the pelvis. The pudendal block gets its name because a local anesthetic, such as lidocaine or chloroprocaine, is injected into the pudendal canal where the pudendal nerve is located. Ref Robbins 9e pg 345 