Occipital plagiocephaly: Deformation or lambdoid synostosis: II. A unifying theory regarding pathogenesis

摘要: Occipital plagiocephaly is characterized by both unilateral occipital flattening and ipsilateral frontal prominence with anterior deviation of the ear, yielding a characteristic parallelogram shape to cranium. Radiographic changes in lambdoid suture are often evident, but usually patent over most or all its length on skull X-rays and/or CT scans. Both synostosis deformational forces have been implicated as potentially causal pathogenesis this deformity. We proposed unifying theory which incorporates common for cases 'synostosis'. According hypothesis, intrauterine postnatal deformation responsible primary calvarial deformation. These initially act reversible manner produce typical parallelogram-shaped However, continued deformation, more enduring secondary pathological may eventually occur basicranium difficult correct even if offending subsequently removed reversed.