title: [Radiographic morphometry of intervertebral spaces of the vertebral column in health and dystrophic changes in the intervertebral disks].
abstract: OBJECTIVE
  To develop a radiographic morphometric procedure for estimating the sizes and shapes of intervertebral spaces in the thoracic and lumbar spine and to evaluate the status of intervertebral spaces in women in health in terms of their age and in dystrophic transformations of intervertebral disks.
  
  
  METHODS
  The data of a radiographic morphometric study of the sizes and forms of intervertebral spaces were analyzed in 127 women of different ages. Lateral thoracic and lumbar spondylograms performed in compliance with a number of requirements were used to estimate the sizes of anterior, middle, and posterior portions of intervertebral spaces (from T4 to L5); the magnitude of dystrophic changes in the intervertebral disks were determined applying semiquantitative methods.
  
  
  RESULTS
  The intervertebral space width of the lower segment was more than that of the upper one. The differences in the width of intervertebral spaces of the neighboring segments in the lower portions of the vertebral column were greater than those in its upper portions. The intervertebral spaces (T4-T12) were biconvex in shape and those in the upper lumbar segments were posterior wedge-shaped. There was no noticeable narrowing of the intervertebral spaces with age. The age group of 70 years or older showed a significant moderate increase in the height of intervertebral spaces in the middle and lower thoracic vertebral segments. In varying degrees of dystrophic intervertebral disc changes, their most pronounced manifestations were found to be accompanied by a decrease in the width of intervertebral spaces in the lower half of the vertebral column in conjunction with their normal shape being impaired.
  
  
  CONCLUSIONS
  The sizes and shape of intervertebral spaces show a number of regularities associated with the position of a segment in the vertebral column. In the bulk of the thoracic spine, the vertebral spaces are biconvex in shape and those in the transient thoracolumbar area and in the lumbar segment were posterior wedge-shaped. The age-related changes in the sizes and shape of intervertebral spaces are associated with their slight dilatation at the age of 70 years or older, without their normal shape being impaired. When dystro- phic intervertebral disk changes develop, there is a moderate narrowing of intervertebral spaces in the lower half of the vertebral column in conjunction with a wedge-like alteration in intervertebral discs, their shape.
authors: A A
authors: AA
authors: Volkov
authors: N N
authors: NN
authors: Belosel'skiĭ
authors: Iu N
authors: IuN
authors: Pribytkov
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007403:Intervertebral Disc / Q000000981:diagnostic imaging*; D055959:Intervertebral Disc Degeneration / Q000000981:diagnostic imaging*; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging*; D008875:Middle Aged; D011859:Radiography; D012720:Severity of Illness Index; D013904:Thoracic Vertebrae / Q000000981:diagnostic imaging*