Calf bends need to be corrected by conservative treatment and surgical treatment for different conditions of congenital factors and acquired. 1. Congenital factors: some patients have congenital bent calf, which exists at birth. You can use casts or braces to correct the knee deformity using physical methods. With manipulation for correction. At the same time, you can cooperate with the leg muscle strength training, which can change the calf force line and correct the calf bend, and it usually takes a long time to achieve the therapeutic purpose. 2 Surgical correction: (1) Soft tissue surgery: If the patient is over 3 years old, the correction by manipulation alone may be difficult, and the deformity can be solved by soft tissue surgery, combined with physical correction. (2) Osteotomy: If the epiphysis has closed, i.e., patients over 15 years of age or adults, and there is an inversion, eversion, or flexion deformity of the knee, then osteotomy is required. For inversion of the knee, an osteotomy on the tibia is performed. For valgus, an osteotomy under the femur is performed. The deformity can be corrected by osteotomy combined with internal and external fixation. It is recommended to consult a doctor in time to get a clear diagnosis and treatment for the bent calf.