A Prospective Comparison of Ultrasound-Guided Percutaneous Platelet-Rich Plasma Injection

Subjects randomized to this group will fill out a pre-treatment pain survey and have a blood draw They will be be contacted by the investigator by telephone or email on day 7 and day 14 to complete another pain survey. Subjects must avoid non steroidal anti-inflammatory medications for 2 weeks before the study. Two weeks after enrollment subjects see their referring physician to begin physical therapy.

Subjects will fill out a pre-treatment pain survey, then will undergo ultrasound and have blood drawn from their arm. The blood sample will be separated into blood cells and plasma. The plasma portion of the blood (liquid minus the cells) will be injected into the tendon under sterile conditions. Ultrasound will help guide the injection. This is called "Ultrasound guided platelet rich plasma injection." Subjects will be be contacted by the investigator by telephone or email on day 7 and day 14 to complete another pain survey. Subjects must avoid non steroidal anti inflammatory medications for 2 weeks before the study and 2 weeks after the study. Subjects will see their referring physician two weeks after treatment to begin physical therapy.