Ketorolac on Posterior Thoracolumbar Spinal Fusions

Eligibility Details: Inclusion Criteria: - Over 18 years of age - Elective thoracolumbar posterior lumbar instrumented interbody fusion - Minimally invasive spine surgery (MIS) - 3 or fewer levels - Bone Morphogenetic Protein (BMP) use in interbody fusion (1.05mg/level or less) - Consent to study participation Exclusion Criteria: - Active tobacco smoker or history of tobacco smoking in the past 6 weeks - Previous history of surgery at operative level(s) - History of chronic inflammatory/rheumatological condition - History of systemic steroid use in the past 3 months - Auto/Workers' compensation patients - Traumatic pathology at the operative levels - Infection at the operative levels - Tumor at the operative levels - Major psychiatric illness as diagnosed by psychiatrists and on major anti- psychotic/depressants - Patients on chemotherapeutic agents in the last 6 months - Patients who has a history of allergy to Ketorolac - Patients with a history of chemical addiction requiring professional rehabilitation and/or assistance - Patients with current creatinine > 1.5mg/dl - Patients with history of coagulopathy - Patients with history of hepatic impairment - Patients with uncontrolled cardiovascular disease