Caffeine Study for Pain Control Following Total Joint Replacement

Inclusion Criteria: * Patient is older than 18 years old at the time of the surgery. * Patient is treated by Rothman Orthopaedics institute and is scheduled for the surgical procedure at AtlantiCare Regional Medical Center. * Patient is undergoing total hip or total knee arthroplasty. * Patient has the diagnosis of Osteoarthritis of the hip or the knee, or other noninflammatory disease that results in joint damage to the hip or the knee. Exclusion Criteria: * Patient has known history of opioid addiction and/or has taken opioids preoperatively. * Patient has history of cardiac diseases that might be aggravated by the use of caffeine, as diagnosed by a cardiologist or demonstrated by an abnormal EKG. * Patient has a known allergy to aspirin or caffeine. * Patient has history of chronic pain that required the intervention of a pain management doctor. * Patient has an active infection at the time of surgery (systemic or localized) or history of chronic infections that affected the lower extremities. * Patient has history of cancer that would affect patient reported outcomes including pain. * Patient has history of neuropathic pain or nerve degenerative disease. * Patients undergoing revision surgery would be excluded. * Patients who require alternate DTV prophylaxis other than ASA.