The IKDC (International Knee Documentation Committee) subjective survey was used to evaluate pain, activity, and knee function. The IKDC is a reliable, responsive and validated instrument used to assess symptoms, function, and sports activity in patients with a variety of knee disorders.35 In addition, normative data is available to assist in the interpretation of the subjective results.36 Patients were asked to complete the questionnaire independently in a private treatment room at the initial visit and at 1 and 3 months after initial treatment. The same questionnaire was sent in the mail to patients at 6 and 12 months after the initial visit.