Chronic Patellar Tendinopathy (PT)is Prevalent in Participants of Several Sports.A Three-arm, Single-blind Randomized Controlled Trial Will be Conducted. We Want to Compare the Clinical Effectiveness of ESWT Alone, ESWT Combined With Hyaluronic Acid, and ESWT Combined With PRP in Athletes With PT

​ Conditions: Chronic Patellar Tendinopathy Interventions: Device: Extracorporeal Shock Wave Therapy; Drug: Hyaluronic Acid (HA); Biological: Platelet-Rich Plasma; Other: Normal Saline Sponsors: Chang Gung Memorial Hospital Active, not recruiting Conditions: Chronic...