['osteoarthritis', 'pain']
['exparel', 'femoral nerve block bupivacaine', 'toradol', 'morphine sulfate']

        Inclusion Criteria:

        • Patients between the ages of 18 - 73 who are undergoing primary, unilateral, Total Knee
        Replacement at the New England Baptist Hospital in Boston, Massachusetts are eligible to
        participate.

        Exclusion Criteria:

          -  Patients with Revision or Complex Total Knee Replacements and are under the age of 18,
             or over the age of 73 will be excluded.

          -  Patients with an ASA 4 level will be excluded.

          -  Patients with a Body Mass Index of less than 20, and over 40, will be excluded.

          -  Patients taking preoperative narcotics, patients with extreme sensitivity or allergy
             to narcotics or local anesthetics, and patients using opioid medications for at least
             3 months leading up to surgery, will also be excluded.
      