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Longitudinal evaluation17510couldarguethatthisreflectsa‘relapse’causedbyendingofthehelmetmoldingeffectHowever,asimilardeclineinthereferencegroupcanbenotedatage9-12monthsThissuggeststhatthisdeclinedoesnotreflecta‘relapse’,butratheranaturalgrowthpatternasseeninthereferencegroupOverallCIintheEACSgroupremainshigherthanintheOCVRandissignificantlydifferentforearlieragegroupsForlateragegroupstheeffectdiminishesinbothgenderswithaCIapproximating70Pre-surgerystudiesreportCIvaluesintherangeof67-70whichisinlinewithourfindings2126Mostofthepost-surgeryCIvaluesforscaphocephalycorrectionremainaroundthe75-85rangewhicharehigherthanours71221232633–35Thismaybedue toademographicdifferencein thepatientpopulationor to themeasuringmethod1036ThelongitudinalcircumferencechangesdidnotdifferbetweenOCVRandEACSandwereinlinewithliterature723 Whencomparedtothenormalreferencegroupwe found that in the early age groups circumference data islarger in scaphocephalypatientsbutat24monthsthecircumferencehasobtainednormalproportionsagainforbothtreatmentgroupsVolumemeasurementsdifferperstudyduetothelackofconsensusonvolumemeasuringmethodsincraniosynostosis37YettakingmeasuringdifferencesintoaccountwefoundsimilarvolumeschangesforOCVRasreportedbyothers3538The volumedataofEACSpatientsare verysimilar to thoseofourreferencegroup15andtheOCVRgroupThereforeourdatashowsthatbothtechniquesresultinequalandnormalintracranialvolumesGROWTHMAPSThegrowthmapsofbothEACSandOCVRgroups(Figure6and7)showanimpressiveincreaseincranialgrowthAclearincreaseoflateralexpansionandvertexheightcanbenoticedresultinginaproperlateralprofile forboth treatmentoptionsInFigure4thecraniallengthoftheOCVRisgreatercomparedtotheEACSgroup ThiscanbeexplainedbythefactthatOCVRpatientsaretreatedatalaterageandthushavelongerandlargercompensatorygrowthintheanteriorposteriordirection ThevertexheightoftheEACSgroupishigherthanthatofthe