Sternocleidomastoid protrusion is the protrusion of sternocleidomastoid, which usually occurs because of growth and development, wasting, trauma, developmental deformity, local tumor occupying changes and so on.
1. Growth and development: Sternocleidomastoid belongs to cartilage structure, because when teenagers are in the period of growth and development, the sternocleidomastoid, including the rib cartilage and raphe cartilage, have not been fully developed, and most of them belong to normal phenomenon.
2. Slimness: If the patient is weak, slim and has a thin fat layer, the raphe will protrude obviously, and it can disappear gradually after increasing nutrition.
3. Trauma: the fracture of the raphe can be caused by external force, and when the deformity heals, the raphe will usually protrude more obviously.
4. Developmental deformity: when vitamin D deficiency in childhood, it will cause abnormal bone metabolism, which may develop into rickets, and the patient will have the symptom of chicken breast, which is manifested as protruding raphe.
5. Tumor-occupying lesions: when tumor-occupying lesions occur in the thoracic vertebrae, sternum and lungs, they can cause thoracic abnormalities, abnormalities of the sternum, and stimulation causes the sternum to protrude forward and the raphe protrudes.
There are many other reasons for the protrusion of sternal raphe, and those who have obvious protrusion are recommended to consult doctors to clarify the causes and carry out targeted treatment.