File:The American journal of roentgenology, radium therapy and nuclear medicine (1906) (14777067263).jpg

Identifier: americanjournroen09ameruoft (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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The Lumbar Spine and Sacroiliac Joints 17 sit down, as it were, and talk over thevarious conditions found in the lower back.In this way one can obtain a much betterunderstanding of this perplexing lower-back problem. Although all types ofvariations are studied, more attention hasbeen given to the articulating processes.Goldthwait has described two types ofarticulations: the transverse or flattype, and the vertical or crescentic type.We have designated the vertical or cresrcentic as the true lumbar type and the are noted also the position and shape ofthe transverse processes: attempts atsacralization or Iumbaiization of the uppersacral segment; whether there is a largefan-shaped transverse process; if it fuseswith the sacrum or has a distinct articula-tion which overrides the superior wingof the sacrum. Stereoscopic films willshow with considerable accuracy whetherthe fifth transverse process impinges onthe upper sacral wing or on the iliac crest.Rarely is the fifth transverse process
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Fie. 1. Fig. 2. Fig. 3. Fig. 1. True lumbar type of joints with the exception of the articulations between the third and fourth, and thefourth and fifth, which are the mixed type. The lumbosacral articulations are of the true sacral type. Fig. 2.Lumbar type articulations persist throughout lumbar vertebrae with exception of the lumbosacral joint, theleft being the lumbar and the right the sacral type. Fie. 3. True lumbar types in all articulations. flat as the sacral or dorsal type (Figs.1, 2, 4). Nearly all cases presentingsymptoms referable to the lower lumbarvertebrae have a mixed type of joints.There may exist lumbar types of the first,second and third joints, while the fourthmay be sacral, or lumbal and sacral;likewise the fifth may be sacral or themixed type. Rarely is it possible to seetwo lumbal joints at the lumbosacralarticulation (Fig. 3). The true lumbar iswell shown on the film as a vertical linebetween the processes, whereas the sacralor dorsal type faces you and gives a

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