The purpose of this research study is to better understand patient preference and their satisfaction rates with cryotherapy machines based on the direction of the tubing. This study will evaluate both satisfaction and pain of patients who use the cryotherapy machines in the two groups: tubing facing towards the head, and the other with tubing facing toward the feet.

Inclusion Criteria:

• Patients scheduled for an arthroscopic ACL reconstruction (CPT 29888) or MPFL reconstruction/augmentation with internal brace (CPT 27422 or 27429)
• Ages 10-18 years old at the time of surgery
• Patients who have access to a cryotherapy unit at the time of surgery

Exclusion Criteria:

• No ACL reconstruction (CPT 29888) nor MPFL reconstruction/augmentation with internal brace (CPT 27422 or 27429) performed during knee arthroscopy (i.e., isolated meniscus repair, synovectomy/debridement, etc.)
• Patients do not have access to a cryotherapy unit
• Patients less than 10 or older than 18 at the time of surgery

Age, Gender, Group Assignment, Outcome measures (satisfaction rates, pain scores).