File:Radiography, x-ray therapeutics and radium therapy (1915) (14755862174).jpg

Identifier: radiographyxray00knox (find matches)
Title: Radiography, x-ray therapeutics and radium therapy
Year: 1915 (1910s)
Authors: Knox, Robert, 1868?-1928
Subjects: Radiography Radiotherapy
Publisher: New York, Macmillan
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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ckening, irregular incharacter. (2) Areas of increased rarefaction due to marked absorption of the limesalts, with an effort towards new bone formation. (3) Periostitis leads to many layers of new bone being laid down alongthe whole length of the bone. Generally multiple, it therefore affects manyof the long bones. In other cases the thickening may be localised, causing areas of densenew bone formation. Syphilitic Dactylitis This is characterised by periosteal overgrowth, with little or no apparentdisturbance of the bone, the appearance presented by this condition afford-ing a fairly reliable diagnostic point in favour of syphilis. Chronic infective Osteomyelitis (1) General infiltration causes a deeper shadow about the bone and jointwhen the disease appears in the vicinity of the latter. (2) Periosteal infiltration and overgrowth lead to marked increase of theadjacent bone, and this sclerosed bone appears to be much denser than normalbone, and the shadow is greatly increased in area.
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S Iz; hI a w ^ ^^ XI ^ - ?r1 ><^ fl^^l w 5 o H o !l; s , O X fl ■S o =t? 5,r^ O r-; o .& bD &I O) ^ O •--• r^ » ^ bo gT C .2 03 ? c3 OSTEOMYELITIS 181 Acute Osteomyelitis The earliest X-ray appearance of an osteomyelitis, which may runthrough all the stages of the disease in a few weeks, may be an area of rare-faction at the epiphyseal line, commencing in the diaphysis, and later in somecases extending into and involving the epiphysis. This ls followed byperiosteal thickening, necrosis of bone, evidenced by areas of varying density,indicating sequestra. The disease may become localised, when radiographic-ally it is shown by an area of lighter shading surrounded by a periphery ofdenser bone. The condition may arise near the epiphyseal line. Abscessof bone may be the result of the inflammatory process, a typical instancebeing the well-lmown abscess in the upper end of the tibia or lower end ofthe femur. In the hip-joint a mixed i

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