DEXA UPDATED ACTUAL QUESTIONS AND CORRECT
ANSWERS
Question:
1. Osteoporotic Fractures
Answer:
Question:
2. Vertebral Fractures
Answer:
*Most common fracture*
Falls account for 30%-60%
Under-diagnosed, often silent, only 30% diagnosed clinically
Less than half seek medical attention
Question:
3. Progressive Spinal deformity
Answer:
-back pain
-loss of height, kyphosis, protuberant abdomen
-9% of pulmonary capacity lost with each vertebral fracture.
-diminished quality of life
-loss of independence
-increased mortality
Question:
4. Colle's Fracture
Answer:
Fracture of the *distal metaphysis of the radius with dorsal angulation and displacement leading to a 'silver
fork deformity*.
Colles fractures are seen *more frequently with advancing age and in women with osteoporosis.*
Question:
5. Peak bone mass
Answer:
Peaked at age of 30-35.
Question:
6. Bone Biology
Answer:
Interior scaffolding are thinned and completely destroyed
Question:
7. Cortical Bone anatomy
, Answer:
1. *Periosteum* - membrane covering the outside of the bone
2. *Endosteum* - membrane lining the inside of the bone
3. *Bone marrow cavity*
Question:
8. Trabecular Bone
Answer:
Comprises plats, arches, struts with marrow occupying spaces
Forms interior scaffolding
Question:
9. Relative proportions of cortical and trabecular bone
Answer:
*Vertebral Body* (75% T, 25% C)
*1/3 Distal Radius* (25% T, 75% C)
*Femoral Neck* (25% T, 75% C)
Intertrochanteric Region (50:50)
Question:
10. Bone Remodelling
Answer:
Osteoblasts are cells which lay down new bone.
Osteoclasts are cells which break down bone.
Question:
11. Pharmacologic Prevention of Osteoporosis
Answer:
Bisphosphonates
i.e Alendronate, Risedronate, Etidronate
Oestrogen Replacement Therapy
Calcium and Vitamin D
Other Treatment Options : PTH, Strontium, SERMS
Question:
12. Effect of Teriparatide
Answer:
Question:
13. Primary Causes
Answer:
Ageing
Female - Estrogen deficiency
Question:
14. Result of Bone Loss
ANSWERS
Question:
1. Osteoporotic Fractures
Answer:
Question:
2. Vertebral Fractures
Answer:
*Most common fracture*
Falls account for 30%-60%
Under-diagnosed, often silent, only 30% diagnosed clinically
Less than half seek medical attention
Question:
3. Progressive Spinal deformity
Answer:
-back pain
-loss of height, kyphosis, protuberant abdomen
-9% of pulmonary capacity lost with each vertebral fracture.
-diminished quality of life
-loss of independence
-increased mortality
Question:
4. Colle's Fracture
Answer:
Fracture of the *distal metaphysis of the radius with dorsal angulation and displacement leading to a 'silver
fork deformity*.
Colles fractures are seen *more frequently with advancing age and in women with osteoporosis.*
Question:
5. Peak bone mass
Answer:
Peaked at age of 30-35.
Question:
6. Bone Biology
Answer:
Interior scaffolding are thinned and completely destroyed
Question:
7. Cortical Bone anatomy
, Answer:
1. *Periosteum* - membrane covering the outside of the bone
2. *Endosteum* - membrane lining the inside of the bone
3. *Bone marrow cavity*
Question:
8. Trabecular Bone
Answer:
Comprises plats, arches, struts with marrow occupying spaces
Forms interior scaffolding
Question:
9. Relative proportions of cortical and trabecular bone
Answer:
*Vertebral Body* (75% T, 25% C)
*1/3 Distal Radius* (25% T, 75% C)
*Femoral Neck* (25% T, 75% C)
Intertrochanteric Region (50:50)
Question:
10. Bone Remodelling
Answer:
Osteoblasts are cells which lay down new bone.
Osteoclasts are cells which break down bone.
Question:
11. Pharmacologic Prevention of Osteoporosis
Answer:
Bisphosphonates
i.e Alendronate, Risedronate, Etidronate
Oestrogen Replacement Therapy
Calcium and Vitamin D
Other Treatment Options : PTH, Strontium, SERMS
Question:
12. Effect of Teriparatide
Answer:
Question:
13. Primary Causes
Answer:
Ageing
Female - Estrogen deficiency
Question:
14. Result of Bone Loss
