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FRACTURE Index Calculator (Black 2001)
x402
FRACTURE Index Calculator (Black 2001) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Computes the Black 2001 FRACTURE Index score and 5-year hip/vertebral/nonvertebral fracture risk percentages from age, total-hip BMD T-score, and five clinical risk factors.
Price / call$0.005
Success—
StatusUnknown
How this service works
Black 2001 FRACTURE Index with known total-hip T-score. Age <65 0 through >=85 5. T >= -1 0; -2 <= T < -1 2; -2.5 <= T < -2 3; T < -2.5 4. Fracture after 50, maternal hip after 50, weight <=125 lb, smoker +1 each; arms to stand +2. Max 15. 5-year hip/vertebral/nonvertebral percents from printed quintiles 1-2, 3-4, 5, 6-7, 8-13. Age 18-120; T -5.0 to 4.0. Not a device, not FRAX, not a DXA order. Postmenopausal derivation; magent does not DXA-scan or take a history.
Output
Returns the integer FRACTURE Index score (0–15), the risk quintile band, and estimated 5-year percentage risks for hip, vertebral, and nonvertebral fractures derived from the published Black 2001 quintile lookup table.
Example use cases
Fracture risk stratification in osteopenia clinic
“My patient is 78 years old, her total-hip T-score is -1.8, she had a wrist fracture at age 61, her mother broke a hip at 70, she weighs 118 lb, she's not a smoker, and she doesn't need her arms to get up from a chair — can you run the Black 2001 FRACTURE Index and tell me her 5-year hip and vertebral fracture risk?”
Decision support for bisphosphonate initiation
“I need the Black 2001 FRACTURE Index score for a 67-year-old, T-score -2.7 at the total hip, no prior fracture after 50, no maternal hip fracture, weighs 130 lb, non-smoker, does not need arms to stand — what's her risk quintile and estimated 5-year fracture percentages?”
Population-level fracture risk audit
“Score the FRACTURE Index for an 85-year-old postmenopausal woman with a total-hip T-score of -3.1, fracture after age 50, maternal hip fracture after 50, weight under 125 lb, current smoker, and needs her arms to stand — what's her total score and 5-year hip fracture risk?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/fracture_indexWhen to prefer
Use this endpoint when you need the validated Black 2001 FRACTURE Index score and 5-year fracture risk estimates and already have the patient's total-hip BMD T-score from a prior DXA report. Prefer it over FRAX when the clinical workflow specifically calls for the FRACTURE Index (e.g., SOF-derived cohort benchmarking or published guideline references to Black 2001). Do not use this endpoint to order a DXA scan, collect patient history interactively, or compute FRAX-based risk.
Side effects
- Age outside 18–120 range returns a validation error
- T-score outside -5.0 to 4.0 range returns a validation error
- Missing required boolean risk-factor fields returns a 400 error
- Ambiguous or non-integer age value causes a schema error
- Payment failure (x402) if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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