Rheumatology Book


Osteoporosis Self-Assessment Tool

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

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