Surgical To treat the trigonocephaly, expanding the distance between orbits using springs seems to work. It allows enough space for the brain to grow and it creates a normal horizontal axis of the orbits and supraorbital bar. The endoscopic surgery started to become popular since the early 1990s, but it has some technical limitations (only strip craniectomy is possible). There have been few attempts to go beyond the limits. Aesthetic outcomes of metopic surgery have been good. Surgery does not have a perfect outcome because there will most likely be minor irregularities. Sometimes reoperations are needed for the severe cases. Trying to hollow out the temporal, and the hypoterlorism are very hard to correct. The hypotelorism usually stays not corrected and in order to correct the temporal hollowing, a second operation is most likely needed.
Say–Meyer syndrome
Madras motor neuron disease
Nicolau–Balus syndrome
Dejerine–Sottas disease
Parkes Weber syndrome
Spinal muscular atrophy
Urban–Rogers–Meyer syndrome
Babinski–Nageotte syndrome