Toe correction rings are generally referred to as tools for toe deformities that are corrected by constant pulling on the toes. As a kind of orthotic device, the efficacy of toe rings for O-shaped legs needs to be judged according to the severity of the condition and cannot be generalized. 1. When the symptoms are mild: toe ring correction can improve the deformity of the toes, and improve the symptoms of ectropion and hallux valgus, and at the same time, it can play a certain auxiliary effect on O-shaped legs. 2. When the symptoms are more serious: toe ring correction can not play a good therapeutic effect, then need to be treated by support or surgery. O-shaped legs are mainly due to severe calcium deficiency, bad habits and other factors that cause changes in the shape of the legs, you need to choose the appropriate treatment plan under the guidance of a professional doctor, depending on the severity of the condition.