Norland Elite 437A150, Operator'S Manual

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Ten Year Fracture Risk
Note: The Ten Year Fracture Risk feature is available as an option with the
Bone Densitometer. Be aware that your system might not have this option.
A Ten Year Fracture Risk assessment may be provided for patients by entering demo-
graphics information, performing a hip scan, and creating a Ten Year Fracture Risk
report.
The Ten Year Fracture Risk feature is intended to aid the clinician by allowing an eval-
uation that incorporates a review of risk factors into the T-score based interpretation.
It is based on the Frax
®
paper charts which were developed by the World Health
Organization (WHO) to evaluate fracture risk of patients. The charts were developed
by WHO by studying population-based cohorts in Europe, North America, Asia, and
Australia.
Two sets of charts were developed by WHO for use by clinicians, a set based on
Bone Mineral Density (BMD), and a set based on Body Mass Index (BMI). Since bet-
ter characterization of the Ten Year Fracture Risk is provided by the BMD charts, this
data is used to calculate the Ten Year Fracture Risk by the Illuminatus DXA software.
The data sets based on the BMD use a fixed value for BMI of 24. Note that for
patients that have a much lower BMI (less than 20), the actual Ten Year Fracture Risk
may be greater than calculated.
The Ten Year Fracture Risk feature provides a Ten Year Hip Fracture Risk and a Ten
Year Major Osteoporotic Fracture Risk. The hip fracture risk is provided to aid the clini-
cian in assessing how to best proceed with interpreting a T-score based treatment
strategy. In general, when interpreting data from a US population a Ten Year Hip Frac-
ture Risk of greater than 3% justifies raising the aggressiveness of the T-score based
treatment strategy. As guidelines have not yet been developed for interpretation of
Ten Year Major Osteoporotic Fracture Risk, that information is provided for inform-
ative purposes only.
The Ten-Year Fracture Risk feature is specifically designed for assessment of sub-
jects that are at least 50 years old. When subjects with an age below 50 are pro-
cessed, the Ten-Year Fracture Risk Program will process the risk analysis based on
an age of 50. Note that for those patients the actual Ten Year Fracture Risk may be
greater than calculated.
This chapter discusses the following.
Ten Year Fracture Risk Demographics 12-2
Ten Year Fracture Risk Questionnaire 12-3
Ten Year Fracture Risk Confirmation 12-5
Generate and Print a Report 12-6
A Sample Ten Year Fracture Risk Report 12-9
Operator's Guide
437D140 Rev. I