Group T received 3 ml of 0.5% hyperbaric levobupivacaine and 4 mg of oral tizanidine 1 hour before surgery

No active drug will be given per oral

Group T received 3 ml of 0.5% hyperbaric levobupivacaine and 4 mg of oral tizanidine 1 hour before surgery

The duration of the sensory block was measured using the two-segment regression method, while the time until the first need for pain relief after surgery was used to determine the duration of analgesia. The modified Bromage scale was used to assess motor block. (0 = Ability to flex hips, knees, and ankles without paralysis; 1 = the ability to move the knees but not extend the legs; 2 = ability to flex at the ankles but not the knees; 3 = unable to move any part of the lower limb). The time between the injection and the highest Bromage score was used to determine the onset time of motor block.

Intraoperatively patients' Visual Analog Scale (VAS) scores were assessed. Post operatively VAS score will be assessed in PACU every 4th hourly up to 24 hours . The time to the first analgesic requirement was recorded, with tramadol (100 mg) administered when VAS scores exceeded 4. VAS score 0 is no pain and 10 is intense pain.