Plagiocephaly

Oblique head deformity, also known as migraine, is a unilateral hypoplasia of the frontal bone caused by unilateral coronal suture ossification, accounting for about 4%. The bilateral growth of the skull is asymmetric, the frontal bone of the affected side is flat and retracted, and the upper orbital margin is raised and retracted. The diseased side affects the development of brain tissue, the anterior condyle still exists, but it is biased towards the healthy side. Premature closure of the callus can be reached in the middle of the forehead. The asymmetry of the frontal bone affects the entire cranial fornix morphology, the sagittal suture is deviated to the disease side, and the frontal and parietal bones on the healthy side are overswelled. Ossification of unilateral coronal sutures can penetrate to the wing points and skull base. Therefore, almost all oblique head deformities are accompanied by facial asymmetry deformities, which increase with age. The distance between the eyes becomes smaller and the forehead becomes narrower. The auricle and external ear canal can also be asymmetric, but most of them are not obvious, and the orbital nose deformities are more prominent. Oblique head deformities are often associated with mental retardation, cleft palate, cleft lip deformities, urinary system deformities, and total forebrain deformities. Tilted head deformity is one of the symptoms of cranial stenosis. Cranial stenosis is the premature closure of one or more cranial bone sutures, which results in cranial deformities, increased intracranial pressure, mental retardation, and ocular symptoms. It is clinically characterized by premature closure of single or multiple skull sutures.

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