Some O-shaped legs can be corrected. O-shaped leg is a more common term for what is commonly referred to clinically as inversion of the knee. For patients of different ages and with different degrees of inversion, clinics often use targeted treatment. For adolescent patients, because their bodies have not yet matured, there is more room to improve the shape of the leg, the degree of knee entropion is less severe patients are often to tie the leg, wear corrective insoles and other conservative ways to correct. For more severe cases, surgical correction such as internal fixation may be considered. For adult patients, the above conservative treatments can also be used to try to correct mild cases, but for patients with more severe degrees of inversion of the knee, surgery is the only treatment with clearer results, and surgical correction is the preferred option at this time. It is recommended that patients with O-shaped legs should consult a doctor in a timely manner and choose the most appropriate treatment plan according to the specific situation in order to effectively correct the leg shape.