Scaphocephaly part II: Secondary coronal synostosis after scaphocephalic surgical correction.
Palabras clave
Abstracto
OBJECTIVE
Occurrence of secondary coronal synostosis (SCS) and its functional consequences were retrospectively analyzed in sagittal synostosis.
METHODS
Occurrence of SCS and/or fingerprinting and clinical signs of raised intracranial pressure were investigated in children with scaphocephaly with a minimum follow-up of 3 years. Children were divided in 4 groups according to surgery (group 1: "H" craniectomy [193 patients]; group 2: craniectomies with removal of the coronal sutures [24 children]; group 3:"H" craniectomies and flap transpositions without total removal of the coronal suture [36 patients]; and group 4: 253 nonsurgical patients with scaphocephaly).
RESULTS
Among group 1, 20 (10.4%) developed SCS (3 mo to 6 y postoperatively). Fingerprinting was generalized in 13 patients, localized in 5, and absent in 2. Headaches were present in 8 patients. Papilledema appeared during follow-up in 2 of them. Intracranial pressure that was first recorded as normal became elevated, and they both required a surgical decompression. In group 2, none developed an SCS. In group 3, 11% developed SCS. In group 4, 1.2% nonsurgical patients with scaphocephaly presented with an SCS. However, group 4 corresponds to less severe morphologic deformation and/or parents refusing surgery.
CONCLUSIONS
Secondary coronal synostosis appears to occur with an approximate 10% incidence after craniectomies not involving the coronal sutures, with 1% requiring surgical decompression. Patients with milder forms of scaphocephaly who were not operated on (1.2%) rarely developed an SCS. Long-term follow-up should be undertaken even in the milder forms for possible recurrence of secondary synostosis.