Patients after discharge will then be asked to rate their most severe pain each morning and night for 4 consecutive postoperative days using this VAS pain scale. A standardized pain medication regimen will be given including: one or two tabs of Percocet 7.5/325mg to be taken every 4 to 6 hours as needed. A log of the time and amount of medication taken each POD will be kept and recorded by the patients. Patients will also be instructed to use cryotherapy for 20 min intervals 3 times per day. Patients will also begin on POD 0 the use of continuous passive motion machines starting at a comfortable range of motion and progressing 5 degrees/day as tolerated. Patients will return for their first post-operative visit between 7-10 days where diaries will be collected and the patient clinically assessed.