Looped legs, also known as O-shaped legs, is a leg shape in which the ankles of both feet are partially together while the knees cannot be brought together. Common treatments include correcting posture and surgery. Adults with O-shaped legs can have their condition determined by X-rays of the lower limbs in a weight-bearing position. If the condition is mild, it can be treated by correcting the posture. If the condition is serious, O-shaped leg has affected the normal weight-bearing line of the lower limbs, surgical treatment needs to be considered. 1. Correcting posture: Most of the O-shaped leg patients are caused by incorrect walking or standing posture, for example, some people are used to walking in an outward-facing position, which will lead to deformity of the leg. Therefore, improving walking and standing posture can effectively treat O-shaped legs. 2.Surgery (1) Osteotomy and orthopedic surgery: If the patient’s joint surface is flat and there is no obvious damage to the articular cartilage, the patient can be treated by osteotomy and orthopedic surgery, which can save the normal knee joint. (2) Total Knee Replacement Surgery: If the patient’s joint has developed serious degeneration or the articular cartilage is seriously worn out and deformed, it is necessary to consider total knee replacement surgery, which can effectively improve the symptoms and restore the function. Patients with O-shaped legs should actively cooperate with the doctor’s treatment, and should not correct the leg on their own, so as not to aggravate the condition or cause adverse reactions.