Relative width of the lower spinal canal in children.
D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008161:Lumbosacral Region; D008297:Male; D011859:Radiography; D012016:Reference Values; D012447:Sacrum; D013115:Spinal Canal / Q000033:anatomy & histology* / Q000000981:diagnostic imaging