What are the different types of osteoporosis?

What are the different types of osteoporosis?

• A. Primary (Type I and II) and Secondary
• B. Secondary and Tertiary
• C. Primary and Tertiary
• D. Primary Only

Answer: (A)

Understanding how osteoporosis is classified by origin helps make sense of why this option is the best. Primary osteoporosis comes from aging and hormonal changes and is divided into Type I, the postmenopausal form driven by estrogen deficiency that mainly affects trabecular bone, and Type II, the senile form seen with aging that impacts both trabecular and cortical bone. Secondary osteoporosis arises from another medical condition or from medications, such as chronic corticosteroid use, hyperparathyroidism, hyperthyroidism, malnutrition, vitamin D deficiency, or immobilization. This framing—primary (Type I and II) plus secondary—is the standard and most clinically useful way to categorize osteoporosis, whereas tertiary isn’t typically used in this context.

Understanding how osteoporosis is classified by origin helps make sense of why this option is the best. Primary osteoporosis comes from aging and hormonal changes and is divided into Type I, the postmenopausal form driven by estrogen deficiency that mainly affects trabecular bone, and Type II, the senile form seen with aging that impacts both trabecular and cortical bone. Secondary osteoporosis arises from another medical condition or from medications, such as chronic corticosteroid use, hyperparathyroidism, hyperthyroidism, malnutrition, vitamin D deficiency, or immobilization. This framing—primary (Type I and II) plus secondary—is the standard and most clinically useful way to categorize osteoporosis, whereas tertiary isn’t typically used in this context.