Cortical distortion of the ribs means that there is a slight fracture of the ribs, and the broken ends of the fracture are not obviously dislocated, which may be caused by congenital dysplasia and external impact. 1. Congenital dysplasia: due to heredity, lack of nutrition in the embryonic period, the ribs are congenitally dysplastic and the bone cortex will be bent, which will be manifested as twisted rib cortex. 2. External impact: In daily life, the ribs are subjected to external violent impact, resulting in the integrity and continuity of the ribs being damaged and incomplete fracture, which will cause the rib cortex to be distorted. When patients have rib cortical distortion, if accompanied by symptoms of pain and pressure, it is recommended that patients go to the hospital for timely examination and diagnosis, and under the guidance of the doctor for treatment.