60 patients were randomized three groups as follows : Group L wound infiltration with 20 mL 0.25 % levobupivacaine and 40 mg methylprednisolone just before wound closure ; Group B wound infiltration with 20 mL 0.25 % bupivacaine and 40 mg methylprednisolone before closure ; Group C had this region infiltrated with 20 ml physiological saline .