Craniosynostosis

Craniosynostosis affects approximately 1 in 2000–2500 live births, with sagittal representing roughly half of cases [e381-c3, e13573-c1]. Virchow's law remains foundational: skull growth occurs perpendicular to patent sutures, with compensatory parallel growth when sutures fuse prematurely . Brain growth is most rapid in the first year—doubling skull volume—then slows considerably; after age 2, sutures contribute minimally to cranial expansion [e381-c1, e13573-c42]. Surgical timing exploits this growth momentum: the 6-month mark captures substantial first-year growth potential, making 6–12 months the optimal window for open vault remodeling [e13573-c44, e13573-c51]. Endoscopic suturectomy with adjunctive helmet therapy (ideal age ~3 months) achieves cranial index outcomes comparable to open surgery, with 40% cost reduction, shorter hospital stays (median 1 day), and mean blood loss of 23 mL in experienced hands [e381-c21, e381-c25, e381-c27]. Narrow (2 cm) strip craniectomies are now standard, as effective as wide strips [e381-c17, e381-c18]. Elevated intracranial pressure occurs in only 5–20% of single-suture cases and does not manifest before age 1 [e13573-c36, e13573-c38]. Subtle developmental delays affect 30–50% of patients but do not correlate with surgical technique or timing [e13573-c40, e13573-c41]. Ultrasound is preferred for diagnosis under 6 months; CT remains the gold standard but is often unnecessary when clinical findings are classic [e13573-c25, e13573-c29].