[Pathological research on isolated microcallus formation in 576 vertebrae].
576 vertebrae specimens obtained from 24 autopsy cases were studied for microcallus. Microcallus consisted of osteocytes which originated from osteoblasts located on the surface of trabeculae and from medullary reticulum cells. In the early stage, microcallus is immature woven bone which later transforms into mature lamellar bone. The incidence of microcallus is related to stress on the vertebral body and to the age of the patient, therefore, most microcallus were found in the lumbar vertebrae and in the elderly.
Yu
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Department of Pathology, Shanghai Second Medical University.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D002146:Bony Callus / Q000473:pathology*; D002648:Child; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D013314:Stress, Mechanical; D013904:Thoracic Vertebrae / Q000473:pathology