Osteoporosis Flashcards
Content: 3 ways to define osteoporosis.
- Microarchitectural deterioration of bone tissue leading to decreased bone mass
- Bone fragility
- Susceptibility to fracture
Q: Osteoporosis is a problem of _________ peak bone _____ and _____________ bone _____.
decreased, mass, increased, loss
Q: How many million individuals in the US are affected by osteoporosis?
10 million
Q: When does bone mass peak?
Between 20-25 yo
Q: When does bone mass begin to decline?
Around 50 yo
Q: What imaging is often used to identify osteoporosis?
DEXA
Q: What is BMD?
Body mass density - comes from a DEXA test
Defn: T-score
number of standard deviations from the young adult mean density
Defn: Z-score
number of standard deviations from age matched mean density
Q: What T-score indicates osteoporosis?
< -2.5
Q: What T-score indicated osteopenia?
-1 to -2.5
T/F: For every standard deviation below the norm, the risk of fractures triples.
False: doubles
Q: When does the z-score apply for osteoporosis?
pre-menopausal females and males < 50
Q: What is FRAX?
Fracture Risk Assessment Tool
Q: What does FRAX calculate?
10 year fracture risk, for things like hip fracture and osteoporosis fractures
T/F: FRAX is the treatment decision making tool in previously treated pts.
False, untreated
Content: Primary Osteoporosis (2)
- unrelated to chronic illness
- Related to aging and decreased gonadal function
Content: Secondary osteoporosis (2)
- Secondary to chronic illnesses/meds that cause accelerated bone loss
- Ex. glucocorticoid use, hyperthyroidism