The bowstring canthal advancement: a new technique to correct the flattened supraorbital rim in unilateral coronal synostosis.

Patients with unilateral coronal synostosis characteristically have a recessed and flattened supraorbital rim ipsilateral to the fused suture. Despite lateral canthal advancement procedures to correct these anomalies, patients often have a persistent flattened and recessed supraorbital rim after surgery. Current procedures address the pathologic features of the orbital rim only partially by advancing forward a deformed supraorbital rim without correcting the abnormal flattening of the normal rim curvature. The authors describe a technique modification of the supraorbital rim advancement procedure that addresses not only the lack of anterior positioning of it, but also its flattened contour: the bowstring canthal advancement.