For the first week, baseline data will be collected as participants report pain scores (VAS) in the morning, noon, and night. During the next 6 weeks, participants will self-apply the device each day and record their pain score (VAS) before and treatment; and record their pain score (VAS) while performing specified movements designed to evaluate tendon rehabilitation. At bi-weekly site visits, strength measurements will be performed on the injured and uninjured limb. Participants will also complete a standardized questionnaire to assess disability due to the specific tendon injury at baseline and study conclusion.