cellular
• osteoblast function is increased without any change in osteoblast numbers or in the number or function of the osteoclasts
• bone extra cellular matrix production is increased
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skeleton
• osteoblast function is increased without any change in osteoblast numbers or in the number or function of the osteoclasts
• bone extra cellular matrix production is increased
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• increased bone mineral density seen in the shaft of the femur
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• thickening of the cortical bone of the shaft is seen in more than 75% of long bones
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• trabecular bone in the femur is slightly increased at 4 months and more dramatically increased at 9 months of age; however the length and structure of the growth plates were normal
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