To determine the pre-emptive effect of Gabapentin on acute and chronic post-operative pain after spinal surgery

INTERVENTION: Trade Name: Gabapentin Product Name: Gabapentin Pharmaceutical Form: Capsule* Concentration type: not less then Concentration number: 300 mg.‐ Pharmaceutical form of the placebo: Capsule* Route of administration of the placebo: Oral use CONDITION: Acute and chronic back pain after surgery PRIMARY OUTCOME: Main Objective: To determine the pre‐emptive effect of Gabapentin on patients who had spinal surgery Primary end point(s): Pain score for comparison of both groups.; Analgesia ‐ Verbal Rates Score (VRS); ‐ LANSS assessment for neuropathic pain Secondary Objective: INCLUSION CRITERIA: ASA I ‐ 3 patients who underwent spinal operation in the age group of 18 ‐ 75 years Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18‐64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range