Pittsburgh knee rule (Seaberg 1994)
Pittsburgh knee rule (Seaberg 1994): after fall or blunt trauma, a knee radiograph is indicated if the patient cannot walk four weight-bearing steps or is younger than 12 or older than 50. Deterministic published rule with citation. Not a diagnosis; not the Ottawa knee rule.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
254 msmedian answer time
$0.005listed price per call
$0.007price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.magentlab.com/api/calc/pittsburgh_knee
| Category | Everything else |
|---|---|
| Provider host | api.magentlab.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.007 | 254 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"age": 30,
"blunt_trauma_or_fall": true,
"unable_to_walk_four_steps": false
},
{
"age": 30,
"blunt_trauma_or_fall": true,
"unable_to_walk_four_steps": false
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"age": {
"description": "Age in years (0-120). Seaberg 1994: younger than 12 or older than 50 meets the age limb; 12 and 50 do not.",
"type": "integer"
},
"blunt_trauma_or_fall": {
"description": "Fall or blunt trauma mechanism (Seaberg 1994). true or false as assigned by the caller. The rule does not indicate a film without this mechanism.",
"type": "boolean"
},
"unable_to_walk_four_steps": {
"description": "Inability to ambulate four weight-bearing steps (Seaberg 1994). true or false as assigned by the caller.",
"type": "boolean"
}
},
"required": [
"age",
"blunt_trauma_or_fall",
"unable_to_walk_four_steps"
],
"type": "object"
},
"maxItems": 25,
"minItems": 1,
"type": "array"
}
},
"required": [
"items"
],
"type": "object"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"const": "POST",
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}