Osteopenia and Osteoporosis

Major Classification of Osteopenia

Osteoporosis	Osteogenesis imperfecta
Osteomalacia	Malignancy
Osteitis fibrosa
Classification of osteoporosis
1. Senile	8. Genetic disorders
2. Hormone deficiency	Osteogenesis imperfecta Estrogen (women) Ehlers-Danlos syndrome Androgen (men) Marfan’s syndrome


3. Hormone excess	Menke’s syndrome Cushing’s syndrome or glucocorticoid administratiuon Homocystinuria

4. Thyrotoxicosis	9. Miscellaneous
5. Excessive vitamin D administration	Diabetes mellitus Protein calore malnutrition Liver disease Rheumatoid arthritis Heparin therapy Vitamin C deficiency Juvenile osteoporosis Systemic mastocytosis Alcoholism induced
6. Immobilization
7. Hematologic malignancy, especially multiple myeloma