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A new concept of the pattern of structural changes with bone loss by histomorphometric analysis using bone slabs

A new concept of the pattern of structural changes with bone loss by histomorphometric analysis using bone slabs

Journal of Bone and Mineral Metabolism 17(3): 178-186

We examined naked bone slabs (1.2 mm thick) from iliac bone biopsied cores obtained from 33 women aged 33-89 years. The number, size, and shape of the pores in the bone slabs were analyzed. The results revealed that the % bone area (the percentage area occupied by bone in the slab) was linearly correlated with age and other parameters, such as the size of pores, irregularity of pores, and pore distance, but was not correlated to the number of pores. We found a second-degree polynomial relationship between the % bone area and the number of pores. Based on three parameters--% bone area, number of pores, and size of pores--cluster analysis was performed and the specimens divided into three groups. The group with sufficient bone mass showed few small round pores, and the group with severe bone loss revealed a few large pores that were caved in. The characteristics of these groups represented the relationship between bone mass and structural change. The remaining group with moderate bone loss was divided into two subgroups, one with an increased number of pores without expansion and one with expanded pores without an increase in number. We presumed that the variations between the groups were caused by differences between fine and rough structures in the trabeculae caused during the process of bone loss. We concluded that this analysis of bone slabs allowed the pattern of trabecular structural change that occurred with bone loss to be determined easily and visually.

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Accession: 045079668

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PMID: 10757677

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