Trial of Blood Flow Restriction Plus Physical Therapy vs. Physical Therapy Alone for Lateral Epicondylitis

Patients will be randomized to one of two groups, and treatment will be open label and unblinded. A target of 44 patients for enrollment has been set for 80% power, actual enrollment resulted in 41 patients undergoing randomization. Treatment will last for 6 visits with physical therapy with recommended visit intervals of 1 week : Intervention Group: Evidence based physical/occupational therapy, with the addition of therapeutic exercises using a blood flow restriction tourniquet. Control Group: Patients will receive standard evidence based physical therapy The primary outcome (Patient-Rated Tennis Elbow Evaluation \[PRTEE\]) will be collected at enrollment, 3, 6, and 12 months. Secondary outcomes will be collected at the beginning and end of physical therapy interventions (change in: numeric pain rating scale, maximum pain free grip strength, pain free grip strength). We will collect treatments received after the end of physical therapy and before final follow up.