Growth PlateEpiphysesOsteogenesisChondrocytesCartilageBone DevelopmentOccipital BoneTibiaHumerusCalcaneusBone and BonesFetal DevelopmentOssification of Posterior Longitudinal LigamentSpineFemurFetusCollagen Type XSkullOsteochondrodysplasiasGestational AgeMetatarsal BonesBone PlatesChondrogenesisCalcification, PhysiologicLongitudinal LigamentsUltrasonographyLigamentum FlavumSkeletonReference ValuesMetacarpusHypertrophyDwarfismThiramBone Diseases, DevelopmentalRibsTomography, X-Ray ComputedReceptor, Fibroblast Growth Factor, Type 3Cell DifferentiationPeriosteumSex CharacteristicsAchondroplasiaHedgehog ProteinsParathyroid Hormone-Related ProteinOsteoblastsPregnancyGrowth Differentiation Factor 10Bone MatrixExostoses, Multiple HereditaryCartilage, ArticularOsteochondritisIn Situ HybridizationHyperostosisReceptor, Parathyroid Hormone, Type 1Core Binding Factor Alpha 1 SubunitMyositis OssificansCollagen Type IISOXD Transcription FactorsBone Morphogenetic Protein 2Gene Expression Regulation, DevelopmentalAlkaline PhosphataseFemur HeadSOX9 Transcription FactorSkull BaseRicketsCranial Sutures