TrueRelief Efficacy for Supraspinatus Tendonitis

Inclusion Criteria: * Those with shoulder pain of recent onset (\<3 months) * Those with supraspinatus tendonitis only (see exclusion criteria below) * Those whose physical examination meets either criteria below: * Positive impingement tests * At least two of: * Jobe * Modified Jobe * Hawkins-Kennedy * Neer * Painful arc: * Painful arc at 70-120 degrees abduction and/or * Painful arc at 70-120 degrees flexion * Pain with resisted abduction and/or external rotation * Those between the ages of 18 and 65 * Those willing and able to sign consent Exclusion Criteria: * Those who have had ipsilateral shoulder surgery involving the supraspinatus muscle * Those who have experienced a fracture or avulsion fracture of any element of the shoulder or forequarter area (rib cage, clavicle, or humerus) * Those with full-thickness rotator cuff tear * Those with a long head of biceps rupture * Those with shoulder pathology other than SST (ex: glenohumeral joint (GHJ) arthritis, adhesive capsulitis, labral tear). However, ACJ arthritis can be admitted since this is a very common comorbidity. * Those with comorbidities that may confound the outcome, such as: * Diabetes (either type I or type II) * Auto-inflammatory diseases * Auto-immune diseases * Connective tissue disorders (Ehlers Danlos Syndrome) * Those with demand type pacemakers * Pregnancy