Osteoporosis Index of Risk (OSIRIS Score) for Identifying a Postmenopausal Woman at Risk for Low Bone Mineral Density

Description

Sedrine et al developed the Osteoporosis Index of Risk (OSIRIS) to identify postmenopausal women at risk for having a low bone mineral density. The authors are from the WHO Collaborating Center for Public Health Aspects of Rheumatic Disease in Liege, Belgium.

NOTE: OSIRIS is a registered trademark.

Parameters:

(1) age in years

(2) body weight in kilograms

(3) history of a low impact fracture

(4) current hormone replacement therapy (HRT)

Parameter	Findings	Points
history of low impact fracture	no	0
	yes	-2
current hormone replacement therapy	no	0
	yes	+2

OSIRIS =

= INT(-2 * (age in years)/10) + INT(2 * (body weight in kg)/10) + (points for fracture history) + (points for current HRT)

where:

• For age in years and body weight the values were multiplied by a factor and then the right-most digit is removed. This is because units were based on 10 years and 10 kilograms respectively.

Interpretation:

• minimum score: -8

• maximum score: +12

OSIRIS	Risk of Low Bone Mineral Density	Percent Women with T Score < -2.5
> 1	low risk	7%
-3 to 1	intermediate risk	39%
< - 3	high risk	66%

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Description

Specialty

ICD-10