The wind of minimally invasive treatment is medical-surgical quickly scraped up, its less damage and fast recovery quickly conquered the majority of patients. The soft ureteroscopy, cystoscopy, fiberoptic nephroscopy, neodymium laser, etc. in the Department of Urology of Boai Hospital have given a clean sweep to the urinary stones. The medical technology of orthopedic surgery is also comparable to the international level, and the introduction of osteoarthroscopy, according to expert Sugan Xinmin, almost all injuries and diseases in the knee joint can be examined and treated through arthroscopy, which has become a major breakthrough in orthopedic surgery. Meniscal injuries in the knee joint can be caused by a fall, twisting, or external impact. After a meniscal injury, patients often feel pain in the knee joint when walking and often have a feeling of the joint “pinching”. They may also experience thinner thighs and pain when walking up and down stairs or squatting. The meniscus is the half-moon shaped cartilage in the knee joint between the thigh and calf bones, which protects the joint surface by cushioning the joint pressure. Meniscal injuries usually do not heal on their own and require arthroscopic surgery to remove or repair the damaged portion. Rupture of the anterior fork ligament of the knee The ligament can be damaged by a fall, twisting, or impact. After a ligament injury, the knee joint becomes unstable, making it difficult for the patient to run, unable to jump, and experiencing joint tenderness, as well as thinner thighs and painful walking up and down stairs or squatting. The anterior cruciate ligament cannot heal on its own after rupture, and this ligament should be reconstructed with arthroscopic surgery. Knee patellofemoral disease Abnormal shape or position of the patella due to genetics, trauma, muscle atrophy, etc. The patient has pain in the knee joint when walking up and down stairs, squatting or standing up, but has no discomfort when walking or running on a flat surface (sometimes called chondromalacia patellae). The patella, commonly known as the “kneecap,” is located in front of the knee joint. It mainly supports the body’s activities such as walking up and down stairs, squatting and standing up. This condition often requires arthroscopic surgery to correct the position of the patella. Intra-articular free bodies in the knee often form as a result of trauma or breakage of an intra-articular bone spur. When the fragment travels to the middle of the joint, it causes joint pain and locking, which gradually recovers after the fragment leaves the joint space with slow movement. The free body needs to be removed arthroscopically. The patient has pain or leg weakness when walking up and down stairs, squatting or standing up, but is not limited in walking or running on a flat surface. This is due to a thin film of fibrous tissue left over from a congenital process at the edge between the kneecap and the thigh bone. Trauma or inflammation can cause it to thicken and enlarge and extend into the space between the kneecap and thigh bone, causing symptoms. The band needs to be removed arthroscopically. Mild to moderate arthritis of the knee Joint degeneration in the elderly, joint osteophytes, joint spurs, post-traumatic arthritis, rheumatoid arthritis, and other diseases cause mild to moderate damage to the cartilage on the surface of the knee joint. Patients experience joint pain when walking, restricted movement, joint extension, or joint deformities such as O-leg, X-leg, or K-leg. Patients who are temporarily unable or unwilling to undergo joint replacement surgery may have their pain temporarily relieved by arthroscopic surgery to remove bone spurs and reshape the joint surface.