“…Relapse in the anteroposterior dimension occurs in approximately two thirds (65%) of patients with unicoronal synostosis at 5 months (Lwin, Richardson, Duncan, & May, 2011), with roughly 20% of patients requiring repeat surgical correction (Selber et al, 2008). Comparatively, rates of relapse warranting bony revision (Whitaker classification III-IV) in sagittal, metopic, and bicoronal synostosis have been reported at 8%, 7%, and 10%, respectively (Bastidas, Mackay, Taylor, & Bartlett, 2012;Bradford et al, 2021;Hennedige, Richardson, Duncan, et al, 2021;Wes et al, 2014;Whitaker, Bartlett, Schut, & Bruce, 1987). With over 20 years of operating on these patients, the senior author has made many modifications to his surgical technique to try to compensate for the relapse observed in patients with unicoronal synostosis.…”