II. Indications
III. Calculation
- OST = (Wtkg - AgeY)/5
- Where
- WtKg: Weight in kilograms
- AgeY: Age in Years
IV. Interpretation: OST
- High Risk of Osteoporosis: Score less than -3
- Moderate Risk of Osteoporosis: Score less 1 to -3
- Low Risk of Osteoporosis: Score greater than 1
V. Precautions
- Calculation assumes no other risk factors for Osteoporosis
- Significantly increased risk in Rheumatoid Arthritis, Fracture of wrist, hip or rib after age 45
- Significantly lower risk if black
- Other risks such as low-Trauma related Fractures or long-term Corticosteroids take precedence
- See Osteoporosis Risk Factors
- Where other Osteoporosis risks exist, use FRAX Score or Osteoporosis SCORE Estimation
VI. References
- Cadarette (2004) Osteoporos Int 15(5):361-366 [PubMed]
- Schousboe (2008) Park Nicollet Primary Care Update Lecture, St Louis Park, MN