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Maxwell 2008 Nottingham Hip Fracture Score (NHFS) Calculator
x402
Maxwell 2008 Nottingham Hip Fracture Score (NHFS) Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Computes the integer Nottingham Hip Fracture Score (Maxwell 2008) from patient age, sex, hemoglobin, and four caller-assigned clinical flags, returning a score of 0–10.
Price / call$0.005
Success—
StatusUnknown
How this service works
Maxwell 2008 Nottingham hip fracture score: age <=65 0, 66-85 3, >=86 4; male 1; hemoglobin <=10 g/dL 1 (g/L / 10); caller-assigned AMTS <=6, lives in institution, >=2 comorbidities, and malignancy 1 each. Max 10. Integer score only; no predicted 30-day mortality percent. magent does not administer AMTS or clear a patient for surgery. Not the 2012 or 2015 recalibrations.
Output
Returns a single integer NHFS score from 0 to 10 based on the Maxwell 2008 criteria. No predicted 30-day mortality percentage is returned. Age contributes 0 (≤65), 3 (66–85), or 4 (≥86); male sex adds 1; hemoglobin ≤10 g/dL adds 1; each of AMTS ≤6, institutional residence, ≥2 comorbidities, and active malignancy adds 1 point.
Example use cases
Pre-op hip fracture risk stratification
“I have an 88-year-old female hip fracture patient with hemoglobin 8 g/L (so 0.8 g/dL — wait, 80 g/L), AMTS is above 6, she lives at home, has three comorbidities, and no known malignancy. What's her Nottingham Hip Fracture Score?”
Male patient with active cancer
“Can you compute the Maxwell 2008 NHFS for a 70-year-old male with hemoglobin 10.0 g/dL, AMTS is 5 so that's ≤6, lives independently, one comorbidity, and has an active malignancy?”
Borderline anemia in institutional resident
“Score this hip fracture patient on the Nottingham scale: age 66, female, hemoglobin 11 g/dL, AMTS above 6, lives in a care home, two or more comorbidities, and no cancer history.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/nhfsWhen to prefer
Use this endpoint when you need the original Maxwell 2008 NHFS integer score for hip fracture patients — specifically when the scoring rubric must match the 2008 publication (not the 2012 or 2015 recalibrations). Ideal for clinical decision support agents that have already assessed AMTS and comorbidity counts externally, as this endpoint does not administer AMTS or enumerate comorbidities itself.
Side effects
- Missing required parameters (age, sex, amts_le_6, lives_in_institution, comorbidities_ge_2, malignancy) returns a 400 error
- Providing both hemoglobin_g_l and hemoglobin_g_dl simultaneously is rejected
- Age outside 18–120 or hemoglobin outside valid range returns a validation error
- Payment failure or missing x402 payment header returns 402 Payment Required
- Invalid enum value for sex (not 'male' or 'female') causes a 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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