The ability of long duration therapeutic ultrasound to reduce pain, increase strength, and improve quality of life for patients with tendon injury [e.g. tendinopathy of the elbow (medial or lateral], Achilles tendon, or patellar tendon) will be assessed. During the 7-week protocol, participants will receive 4 continuous hours of therapy daily.~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.
Human clinical trial to measure the effect of long duration therapeutic ultrasound on tendon injuries. The hypothesis is that use of long duration ultrasound will relieve pain, increase tendon strength, and improve quality of life for patients with tendon injury.