1. Introduction
OA, pain, functional loss, knee arthroplasty, Knee osteoarthritis, chronic degenerative joint disorders
KNEE OSTEOARTHRITIS, MUSCULOSKELETAL DISORDERS
Knee osteoarthritis (OA) is one of the most common chronic degenerative joint disorders, resulting in arthritic symptoms such as joint pain, stiffness, limited range of motion (ROM), and functional loss.It is estimated that 10% of men and 13.0% of women over the age of 60 have symptomatic knee OA.Medication and peri-articular injection of agents have traditionally been considered the first line of treatment for early knee OA such as Kellgren–Lawrence grade I or II. When conservative treatments fail in those patients with knee OA, they are frequently referred for surgical interventions such as arthroscopic debridement and total knee arthroplasty which results in more social costs.In the process of applying ESWT to various musculoskeletal disorders, ESWT has been proposed as a treatment option for knee OA for several years. Zhao et al