A study of the thickness and spacing of bony structures in the cancellous bone of the iliac crest. Ground sections of methacrylate-embedded material from 67 normal subjects, from 20 to 90 years of age, were examined. Increasing age is accompanied by an increase in the spacing between the bony structures, hut not by any significant reduction in their thickness. The thinnest bony structures appear to be undergoing the most remodelling, as judged by the extent of formation and resorption surfaces.
The postmortem study of a classic case of Werner's syndrome is presented. The subject was a Japanese man who died at the age of 39. Major findings included general microsplanchnia, extreme atrophy of the testes and skin, calcified aortic atherosclerosis, an increase of basophils in the pituitary, aspiration pneumonia, chronic pyelonephritis and a meningioma in the occipital area of the brain. Histologically, no osteoporosis was evident in the lumbar spine and iliac bone. The findings suggest that in Werner's syndrome the dominant pathologic factor may be found in connective tissue other than bone.
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