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Thoracolumbar Injury Classification and Severity (TLICS)

TLICS

Sum the Vaccaro 2005 Thoracolumbar Injury Classification and Severity (TLICS) score from caller-assigned injury morphology, posterior ligamentous complex integrity, and neurologic status, and return the published 0–10 total and treatment-guidance band.

LIVE $0.005 USDC GET /api/calc/tlics

Markdown: /docs/tlics.md · Canonical: https://magentlab.com/docs/tlics

Not a medical device. Not a diagnosis, dose, or listing recommendation.

What it computes

Sum the Vaccaro 2005 Thoracolumbar Injury Classification and Severity (TLICS) score from caller-assigned injury morphology, posterior ligamentous complex integrity, and neurologic status, and return the published 0–10 total and treatment-guidance band.

When to use

When an agent has already assigned the single most severe traumatic thoracolumbar morphology, PLC status, and neurologic status and needs the published TLICS integer and band (0–3 / 4 / ≥5), not a surgical order, AO spine class, or SINS neoplastic score.

When not to use

• Not a medical device. magent does not read imaging or examine the patient. Morphology, PLC, and neurologic status are caller-assigned.
• Not a surgical order. Bands 0–3 (nonoperative guidance), 4 (equivocal), and ≥5 (operative guidance) follow Vaccaro 2005 Table 2; they are not an operative command.
• Not AO spine classification. Caller assigns the single most severe morphology and does not sum multiple morphologies.
• Not SINS (neoplastic; Fisher 2010). This tool is Vaccaro 2005 TLICS for traumatic thoracolumbar injury only.

Formula

TLICS = morphology (compression 1, burst 2, translational_rotational 3, distraction 4) + plc (intact 0, suspected_indeterminate 2, injured 3) + neuro (intact 0, nerve_root 2, complete_cord_conus 2, incomplete_cord_conus 3, cauda_equina 3); Vaccaro 2005; max 10; caller assigns the single most severe morphology; bands 0-3 / 4 / ge_5

Citation

Title

A new classification of thoracolumbar injuries: the importance of injury morphology, the integrity of the posterior ligamentous complex, and neurologic status.

Authors

Vaccaro AR, Lehman RA Jr, Hurlbert RJ, et al.

Source

Spine (Phila Pa 1976). 2005;30(20):2325-2333

DOI

10.1097/01.brs.0000182986.43345.cb

Worked example

Also searched as

• TLICS
• thoracolumbar injury classification
• Vaccaro TLICS
• TLICS score
• thoracolumbar injury severity
• posterior ligamentous complex
• Spine Trauma Study Group TLICS
• TLICS morphology PLC neurology

Try

Opens the live endpoint. Unpaid browser requests show the paywall; agents should send Accept: application/json.

/api/calc/tlics?morphology=compression&plc=intact&neuro=intact

Full URL: https://api.magentlab.com/api/calc/tlics?morphology=compression&plc=intact&neuro=intact

Call

Expect HTTP 402 until you retry with PAYMENT-SIGNATURE. Incomplete query params return HTTP 400 before any quote or charge.

curl -i -H "Accept: application/json" "https://api.magentlab.com/api/calc/tlics?morphology=compression&plc=intact&neuro=intact"

Parameters

Bulk (POST)

POST the same path with a JSON items array. The first item is the GET unit; each additional item is $0.002. Invalid items return HTTP 400 before settlement.

POST /api/calc/tlics Max 25 unit_amount + extra_item_amount * (n - 1) extra $0.002 PREVIEW

• 1 to 25 items. Each item uses the same keys as the GET query parameters.
• POST of 1 item costs the same as GET. Lists longer than 25: chunk into multiple POSTs. Extra items still execute; do not pad dummy rows.
• The first invalid item fails the whole request (index in the 400 JSON). You are not charged.
• HTTP 200 is {count, path, items}. Each items[i] is the GET 200 body for that row.
• Catalog misses (empty matches, found=false) stay paid 200s inside that slot.
• x402 resource URL is this path plus n and body_sha256. Browsers that prefer text/html get the same paywall as GET; Pay retries POST with the same items.

Example request (fixture)

{
  "items": [
    {
      "morphology": "compression",
      "neuro": "intact",
      "plc": "intact"
    },
    {
      "morphology": "compression",
      "neuro": "intact",
      "plc": "intact"
    }
  ]
}

Open bulk paywall →

Opens a two-item fixture on the API host. Unpaid browsers get the same MetaMask paywall as GET; Pay retries POST with those items.

Example 200 (fixture)

{
  "count": 2,
  "path": "/api/calc/tlics",
  "items": [
    {
      "components": [
        {
          "value": "compression",
          "factor": "morphology",
          "points": 1,
          "present": true
        },
        {
          "value": "intact",
          "factor": "plc",
          "points": 0,
          "present": true
        },
        {
          "value": "intact",
          "factor": "neuro",
          "points": 0,
          "present": true
        }
      ],
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "citation": {
        "authors": "Vaccaro AR, Lehman RA Jr, Hurlbert RJ, et al.",
        "doi": "10.1097/01.brs.0000182986.43345.cb",
        "id": "vaccaro-2005",
        "pmid": "16227897",
        "source": "Spine (Phila Pa 1976). 2005;30(20):2325-2333",
        "title": "A new classification of thoracolumbar injuries: the importance of injury morphology, the integrity of the posterior ligamentous complex, and neurologic status."
      },
      "formula": "tlics",
      "formula_expression": "TLICS = morphology (compression 1, burst 2, translational_rotational 3, distraction 4) + plc (intact 0, suspected_indeterminate 2, injured 3) + neuro (intact 0, nerve_root 2, complete_cord_conus 2, incomplete_cord_conus 3, cauda_equina 3); Vaccaro 2005; max 10; caller assigns the single most severe morphology; bands 0-3 / 4 / ge_5",
      "max_score": 10,
      "score": 1,
      "tlics_band": "0-3"
    },
    {
      "components": [
        {
          "value": "compression",
          "factor": "morphology",
          "points": 1,
          "present": true
        },
        {
          "value": "intact",
          "factor": "plc",
          "points": 0,
          "present": true
        },
        {
          "value": "intact",
          "factor": "neuro",
          "points": 0,
          "present": true
        }
      ],
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "citation": {
        "authors": "Vaccaro AR, Lehman RA Jr, Hurlbert RJ, et al.",
        "doi": "10.1097/01.brs.0000182986.43345.cb",
        "id": "vaccaro-2005",
        "pmid": "16227897",
        "source": "Spine (Phila Pa 1976). 2005;30(20):2325-2333",
        "title": "A new classification of thoracolumbar injuries: the importance of injury morphology, the integrity of the posterior ligamentous complex, and neurologic status."
      },
      "formula": "tlics",
      "formula_expression": "TLICS = morphology (compression 1, burst 2, translational_rotational 3, distraction 4) + plc (intact 0, suspected_indeterminate 2, injured 3) + neuro (intact 0, nerve_root 2, complete_cord_conus 2, incomplete_cord_conus 3, cauda_equina 3); Vaccaro 2005; max 10; caller assigns the single most severe morphology; bands 0-3 / 4 / ge_5",
      "max_score": 10,
      "score": 1,
      "tlics_band": "0-3"
    }
  ]
}

Response

Example JSON

Machine form of the same example. Frozen fixture. Not a live lookup.

{
  "components": [
    {
      "value": "compression",
      "factor": "morphology",
      "points": 1,
      "present": true
    },
    {
      "value": "intact",
      "factor": "plc",
      "points": 0,
      "present": true
    },
    {
      "value": "intact",
      "factor": "neuro",
      "points": 0,
      "present": true
    }
  ],
  "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
  "citation": {
    "authors": "Vaccaro AR, Lehman RA Jr, Hurlbert RJ, et al.",
    "doi": "10.1097/01.brs.0000182986.43345.cb",
    "id": "vaccaro-2005",
    "pmid": "16227897",
    "source": "Spine (Phila Pa 1976). 2005;30(20):2325-2333",
    "title": "A new classification of thoracolumbar injuries: the importance of injury morphology, the integrity of the posterior ligamentous complex, and neurologic status."
  },
  "formula": "tlics",
  "formula_expression": "TLICS = morphology (compression 1, burst 2, translational_rotational 3, distraction 4) + plc (intact 0, suspected_indeterminate 2, injured 3) + neuro (intact 0, nerve_root 2, complete_cord_conus 2, incomplete_cord_conus 3, cauda_equina 3); Vaccaro 2005; max 10; caller assigns the single most severe morphology; bands 0-3 / 4 / ge_5",
  "max_score": 10,
  "score": 1,
  "tlics_band": "0-3"
}

Client errors (HTTP 400)

Invalid params return 400 without charge. Shared HTTP 402 and 503 meanings: Payments.

Related tools

• NEXUS C-spine — Apply the Hoffman 2000 NEXUS C-spine rule and return whether the five low-risk criteria all hold (imaging not indicated by this rule).
• SINS — Sum the Fisher 2010 Spinal Instability Neoplastic Score from six caller-assigned items and return the published 0–18 integer total. Not later SOSG stability strata and not an operative order.

Payment

Unpaid requests return HTTP 402 even if query parameters or POST items are missing or invalid, so CDP and agents can index the path. After a PAYMENT-SIGNATURE, invalid params return HTTP 400 JSON before settlement. magent does not charge. Fix the params, then request a new 402 quote for that complete URL. Catalog misses (empty matches, found=false) are valid paid 200s. Unpaid valid requests return HTTP 402 with a base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote: retry the same PAYMENT-SIGNATURE. Full handshake and shared payment errors: Payments. Stdio MCP: /docs/mcp.

Guarantees

• HTTP 402 is unpaid, including a missing query. After PAYMENT-SIGNATURE, invalid parameters return HTTP 400 before settlement. You are not charged. HTTP 402 never includes the tool JSON.
• exact: settlement finishes before the tool (paymentFlow upfront). batch-settlement: verify/deposit before the tool; chargedCumulativeAmount commits after HTTP 2xx. Uncertain or failed settlement fails closed (HTTP 503). Retry the same PAYMENT-SIGNATURE.
• HTTP 402 is unpaid only. Do not sign a second authorization because of a 503.
• Execution is timeout-bounded and concurrency-capped.
• Calculator inputs are stored encrypted for allowlisted operators (Magent Console). They are not in public logs, SSH lookups, catalog, or rollups. Request logs store path without query.