; this is usually preparation for maxillary surgery.Apert SyndromeIn nearly all patients with Apert syndrome, the cause is 1 of 2 FGFR2 mutations involving amino acids (Ser252Trp, Pro253Arg). The condition is inherited in an autosomal dominant mode. [8] Craniosynostosis is present, characterized by brachycephaly and, frequently, turricephaly; the anterior fontanelle is enlarged. [9] The maxilla is hypoplastic are considered separately.Common deformities that occur as a result of premature suture fusion are scaphocephaly, trigonocephaly, brachycephaly, plagiocephaly, oxycephaly, and turricephaly. The sutures involved in these deformities are sagittal, metopic, bicoronal, unicoronal, and multiple for the last 2 conditions. Complex premature suture fusion is associated with Apert, Crouzon, Kleeblattschädel, Pfeiffer