{"uid":"cap_xPVDkAfN8Fe4hCa6PUvS7","slug":"fracture-index-calculator-black-2001-90b828d0","name":"FRACTURE Index Calculator (Black 2001)","description":"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.","url":"https://api.magentlab.com/api/calc/fracture_index","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["age","bmd_t_score","fracture_after_50","maternal_hip_fracture_after_50","weight_le_125_lb","current_smoker","arms_to_stand"],"properties":{"age":{"type":"integer","description":"Age in years (integer 18-120). Black 2001 FRACTURE Index: <65 scores 0; 65-69 scores 1; 70-74 scores 2; 75-79 scores 3; 80-84 scores 4; >=85 scores 5. Derivation was postmenopausal SOF women age 65 or older; the published instrument still lists <65 as 0."},"bmd_t_score":{"type":"number","description":"Caller-assigned total-hip BMD T-score (number -5.0 to 4.0). Black 2001 with-BMD instrument: T >= -1 scores 0; -2 <= T < -1 scores 2; -2.5 <= T < -2 scores 3; T < -2.5 scores 4. magent does not DXA-scan."},"arms_to_stand":{"type":"boolean","description":"Usually needs arms to stand from a chair (Black 2001). true scores 2; false scores 0. true or false. magent does not examine the patient."},"current_smoker":{"type":"boolean","description":"Current smoker (Black 2001). true scores 1; false scores 0. true or false. magent does not take a smoking history."},"weight_le_125_lb":{"type":"boolean","description":"Weight 125 pounds (57 kg) or less (Black 2001). true scores 1; false scores 0. true or false. magent does not weigh the patient."},"fracture_after_50":{"type":"boolean","description":"Any fracture after age 50 (Black 2001). true scores 1; false scores 0. true or false. magent does not take a history."},"maternal_hip_fracture_after_50":{"type":"boolean","description":"Maternal hip fracture after age 50 (Black 2001). true scores 1; false scores 0. true or false. magent does not take a history."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_lrAyRRZI9ikwkU1t7SsET","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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.","exampleAgentPrompt":"Using the Black 2001 FRACTURE Index, calculate the 5-year hip, vertebral, and nonvertebral fracture risk for a 72-year-old postmenopausal woman with a total-hip T-score of -2.3, a prior fracture after age 50, no maternal hip fracture, weighs over 125 lb, is a current smoker, and does not need her arms to stand.","exampleUseCases":[{"title":"Fracture risk stratification in osteopenia clinic","prompt":"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?"},{"title":"Decision support for bisphosphonate initiation","prompt":"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?"},{"title":"Population-level fracture risk audit","prompt":"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?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:09:09.581Z","isFirstParty":false}