File:The American journal of roentgenology, radium therapy and nuclear medicine (1906) (14735097726).jpg

Identifier: americanjournroen05ameruoft (find matches)
Title: The American journal of roentgenology, radium therapy and nuclear medicine
Year: 1906 (1900s)
Authors: American Radium Society American Roentgen Ray Society
Subjects: Radiotherapy X-rays
Publisher: Springfield, Ill. C.C. Thomas
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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ral I3th-28th 1st coccygeal 37th-40th structural arrangement 13th-16th odontoid process of axis i7th-20th Costal processes, 6th and 7th cervical. 2ist-33d 5th cervical 33d-36th 4th, 3d, 2d cervical . 37th-40thTransverse processes, cenacal and dor-sal 2ist-24th Itunbar 25th—28th Ribs and Sternum Ribs, 5th, 6th, 7th 8th-9th week 2d, 3d, 4th, 8th, 9th, loth, nth. 9th 1st loth I2th (ver\ irregular) loth SternumStemiim 2ist-24th week Pelvic Girdle Ilium 9th week Ischium (descending ramus) 16th-17 th Os pubis (horizontal ramus) 2ist-28th Lower Extremity Femur (diaphysis) Sth-gth week (distal diaphysis) 35th-40th Tibia (diaphysis) 8th-9th ;) (proximal epiphysis) 40th Fibula 9th Os calcis 2ist-29th ^ Astragalus 24th-32d Cuboid 40th )) Metatarsal, 2d and 3d 9^11 4th, 5th, and 1st ioth-i2th Phalanges, terminal ist gth terminal 2d, 3d, 4th ioth-i2th terminal 5th I3th-I4th nasal ist, 2d, 3d, 4th, 5th .. I3th-I4th middle 2d 20th-25th middle 3d 2ist-26th middle 4th 29th-32d middle 5th 33d-36th 43
Text Appearing After Image:
\o-i^ OF Fig. 1.—Diagram showing osseous dfevelopment of infant at full term, anddevelopment of ossification centers in weeks. Centers shown which are fre-quently absent at birth: (1) head of tibia; (2) coccyx. Centers omitted in out-line: (1) sternum; (2) hyoid. Translations and Abstracts 45 There are, as might be expected, some vari-ations in the normal process of ossification, andit is also influenced by pathologic conditions ofthe mother and of the fetus (for example,syphilis, rickets, osteogenesis imperfecta, etc.).In general, these pathologic processes may wellbe diagnosed in the roentgenograms so thatan error may easily be prevented. In some por-tions of the skeleton the ossification is less regu-lar than in others, and as a general rule themore caudad the portions of the skeleton are,the more they are subject to variations in theprocess of ossification; and the centers whichdevelop at a later period of fetal life are alsomore variable. Thus, there are considerablevariations

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