title: [Normal radiographic appearance of the distal ends of the radius and ulna--a correlative radiographic and histologic slab study of the wrists in 50 infants].
abstract: Based on a correlative radiographic and histologic slab study of the wrists in 50 infants who died of unrelated diseases, the author's chief conclusions are as follow: 1) On the wrist radiograph of the infant, bone bark in the Ranvier's groove may appear as a "thorn-like" bony process on the margins of the metaphysis of the radius and ulna. 2) The radiographic appearance of the provisional zone of calcification at the distal ends of the radius and ulna are variable on radiographs of normal wrists, and familiarity with these variations precludes incorrect diagnosis. 3) The locations of the partially convex part of the provisional zone of calcification on the radiograph of the wrist correspond to where the vessels in the epiphyseal cartilage are located.
authors.affiliation: PUMC Hospital, Beijing.
authors.forename: W
authors.initials: W
authors.lastname: Yu
mesh_terms: D002113:Calcification, Physiologic; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011859:Radiography; D011884:Radius / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D012016:Reference Values; D014457:Ulna / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D014953:Wrist / Q000033:anatomy & histology / Q000000981:diagnostic imaging*