“…Although total knee replacement may serve as an effective alternative for patients with severe knee OA, the risk of surgical complications cannot be completely eliminated. Numerous conservative treatment options in OA, including analgesic medication, physical therapy, unloaded bracing, intra‐articular injections and so on, are currently available, aiming to relieve the symptoms and to delay the surgical intervention . As an innovative therapy, researchers believe that cell therapy is the next logical generation in the progression of surgical intervention .…”