Abstract:Osteoarthritis treatment needs to follow a stepped program, including basic treatment, drug therapy, repair therapy, and reconstruction therapy. Primary treatment is preferred. Pharmacological treatment is gradual, with non-steroidal anti-inflammatory drugs first used topically and orally if necessary, and intra-articular injection of Sodium Hyaluronate, PRP, adipose stem cells, and cautious application of tramadol and other drugs are considered if the efficacy is poor. Repair treatment is commonly used for force line correction surgery. 3D printing-assisted tibial high osteotomy can realize intraoperative precise osteotomy and correct the force line of the lower limb. Reconstructive treatment is mainly joint replacement surgery. Unicompartmental knee arthroplasty has faster recovery and fewer complications than total knee arthroplasty, but the revision rate is high; postoperative complications, pain and functional scores of bi-unicompartmental knee arthroplasty are comparable to total knee arthroplasty, but better gait is expected. With the development of computers, digital assisted technologies such as robotics, mixed reality, and 3D printing are widely used in joint replacement surgery, and the research of artificial joint materials is an eternal hot spot.