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[edit] Osteoporosis
1. Disuse
2. Related to aging (postmenopausal, senile)
3. Idiopathic juvenile
4. Transient
5. Reflex sympathetic dystrophy
[edit] Osteomalacia
1. Dietary
2. Gastrointestinal malabsorption
a. Liver disease
b. Anticonvulsant therapy
3. Tumor induced
4. Renal osteodystrophy
5. Vitamin D dependent rickets
6. Milk-alkali syndrome
[edit] Parathyroid disorder
1. Primary hyperparathyroidism
a. Subperiosteal resorption
b. Brown tumor
2. Secondary hyperparathyroidism
[edit] Pituitary disorder
1. Gigantism
2. Acromegaly
[edit] Intoxication, poisoning
1. Heavy metal (lead)
2. Fluorine
3. Hypervitaminosis A
4. Hypervitaminosis D
[edit] Complication of drug use
1. Prostaglandin (periostitis)
[edit] Osteonecrosis
1. Causes
2. Bone infarction
3. Legg-Calve-Perthes disease
4. Freiberg infraction
5. Kienböck's disease
6. Kohler disease
7. Spontaneous osteonecrosis of the knee
[edit] Hematologic disorder
1. Sickle cell disease or variant
2. Thalassemia or variant
3. Iron deficiency anemia
4. Hemophilia
5. Idiopathic myelofibrosis
6. Extramedullary hematopoiesis
7. Fatty marrow reconversion
[edit] Miscellaneous
1. Hemochromatosis
2. Alkaptonuria
3. Amyloidosis
4. Paget's disease
5. Calcification/ossification secondary to venous stasis
6. Calcification/ossification secondary to paraplegia
7. Hypertrophic osteoarthropathy
a. Primary (pachydermoperiostosis)
b. Secondary (pulmonary, etc.)
8. Infantile cortical hyperostosis (Caffey disease)
