A fracture that heals in an abnormal anatomic position and affects or potentially affects function is referred to as aberrant healing. Poor repositioning or poor fixation of the fracture results in angulation, shortening, rotation or lateral displacement of the fracture part, and if this is not corrected in time, deformity healing can occur. The principle of treatment is mainly to improve the functional impairment caused by deformity healing, and improving the appearance is secondary. (1) Deformities found before the fracture has completely and firmly healed should be corrected by manipulation or surgery as early as possible and then given fixation. (2) If deformity occurs with delayed healing, early correction should also be done. (3) If the deformity has been formed and firmly healed, if the joint movement is poor, joint movement should be practiced first and then the deformity should be corrected. If the joint movement is good, corrective surgery should be performed as early as possible to prevent the occurrence of traumatic arthritis.