osteoporosis, definition, osteoporosis definition, etiology and risk factors, causes, clinical symptoms and signs, clinical features, diagnosis, bone scan, bonr turnover markers, bone formation markers management, calcium and vitamin d3, calcium, vitamind3, denosumab, teriparatide, PTh analogue, raloxifine, calcitonin, zolendronate, alendronate, bone densitometry, bisphosphonates, FRAX, FRACTURE RISK ASSESSMENT TOOL