Total knee replacement surgery is becoming more and more accepted as an effective solution for severe knee osteoarthritis, but not everyone is suitable to undergo this surgery. Total knee replacement is the application of a total knee structure made of artificial material to replace the diseased autologous joint in order to obtain knee function. In recent years, it is often used in patients with severe knee problems. Who is suitable for joint replacement surgery – Indications: Mainly used for severe joint pain, instability, deformity, and serious impairment of normal life activities, which is ineffective or not significant after non-surgical treatment. Various inflammatory arthritis of the knee, including rheumatoid arthritis, osteoarthritis, hemophilic arthritis, etc.; a small number of traumatic arthritis; osteoarthritis after failed high tibial osteotomy; bone tuberculosis with controlled disease; severe primary or secondary osteochondral necrotic disease Who is not suitable for joint replacement surgery – contraindications: muscle paralysis around the knee or neurological arthropathy resulting in muscle weakness; severe flexion contracture deformity (>60°); severe systemic disease (severe diabetes, severe heart disease, severe hepatic or renal insufficiency, etc.), but severe osteoporosis, joint instability, severe muscle weakness, fibrous or osseous fusion is not an absolute contraindication to surgery; acute or chronic infectious disease, active tuberculosis infection, bleeding disorders, etc., throughout the body and around the knee joint; knee joint that has been fused in a functional position for a long time without pain.