The knee surgeon in Sngapore first can take a small sample of cartilage cells through the joint. They are then accustomed to grow a lot more cells in a laboratory and the new cells are applied to replace the damaged cartilage. Allow pain be a guideline to suit your needs. https://www.theorthopaedicandpainpractice.com/understanding-knee-pain-and-how-to-manage-it-in-singapore/