Journal Article Baseball Injury prevention Adhesive capsulitis Arthroscopic capsular release Case Reports Contracture Elbow Elbow dislocation Elbow instability Epidemiology Frozen shoulder High school baseball pitchers Lateral collateral ligament injury Medial collateral ligament injury Medial epicondyle fracture Medical checkups Pitching-related disorders Range of motion Reciprocal inhibition Risk factor Self-satisfaction Shoulder Shoulder and elbow injuries Triamcinolone acetonide elbow forearm flexor muscle strength glenohumeral internal rotation deficit pitcher posterior shoulder tightness