Subaxial Cervical Spine Injury Classification (SLICS)

SLICS

Sum the Vaccaro 2007 Subaxial Cervical Spine Injury Classification (SLICS) score from caller-assigned injury morphology, disco-ligamentous complex integrity, neurologic status, and continuous cord compression, and return the published 0–10 total and treatment-guidance band.

LIVE $0.005 USDC GET /api/calc/slics

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

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

What it computes

When to use

When an agent has already assigned the single most severe traumatic subaxial cervical morphology, DLC status, neurologic status, and whether continuous cord compression is present with a deficit, and needs the published SLICS integer and band (0–3 / 4 / ≥5), not a surgical order, TLICS, 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, DLC, neurologic status, and continuous cord compression are caller-assigned.
Not a surgical order. Bands 0–3, 4, and ≥5 follow Vaccaro 2007 treatment guidance; they are not an operative command.
Not TLICS (thoracolumbar; PLC 0/2/3). This tool is Vaccaro 2007 SLICS for subaxial cervical injury only.
Not AO spine classification. Caller assigns the single most severe morphology (burst already includes compression; do not sum morphologies).
Not SINS (neoplastic). magent does not read imaging.

Formula

SLICS = morphology (none 0, compression 1, burst 2, distraction 3, rotation_translation 4) + dlc (intact 0, indeterminate 1, disrupted 2) + neuro (intact 0, root 1, complete 2, incomplete 3) + continuous_cord_compression (+1 only when neuro is not intact); Vaccaro 2007; max 10; caller assigns the single most severe morphology; bands 0-3 / 4 / ge_5

Citation

Title: The subaxial cervical spine injury classification system: a novel approach to recognize the importance of morphology, neurology, and integrity of the disco-ligamentous complex.
Authors: Vaccaro AR, Hulbert RJ, Patel AA, et al.
Source: Spine (Phila Pa 1976). 2007;32(21):2365-2374
DOI: 10.1097/brs.0b013e3181557b92

Worked example

No injury morphology, intact DLC, intact neurology

Given: continuous_cord_compression=falsedlc=intactmorphology=noneneuro=intact

none → 0; intact DLC → 0; intact neuro → 0; continuous_cord_compression false → 0
Score = 0 (max 10); slics_band 0-3

Compression, disrupted DLC, root injury

Given: continuous_cord_compression=falsedlc=disruptedmorphology=compressionneuro=root

compression → 1; disrupted DLC → 2; root → 1; continuous_cord_compression false → 0
Score = 4 (max 10); slics_band 4

Rotation/translation, disrupted DLC, incomplete cord, compression

Given: continuous_cord_compression=truedlc=disruptedmorphology=rotation_translationneuro=incomplete

rotation_translation → 4; disrupted DLC → 2; incomplete → 3; continuous_cord_compression true → 1
Score = 10 (max 10); slics_band ge_5

Also searched as

SLICS
subaxial cervical spine injury classification
Vaccaro SLICS
SLICS score
cervical SLICS
disco-ligamentous complex
Spine Trauma Study Group SLICS
SLICS morphology DLC neurology

Try

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

/api/calc/slics?morphology=none&dlc=intact&neuro=intact&continuous_cord_compression=false

Full URL: https://api.magentlab.com/api/calc/slics?morphology=none&dlc=intact&neuro=intact&continuous_cord_compression=false

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/slics?morphology=none&dlc=intact&neuro=intact&continuous_cord_compression=false"

Parameters

Name	Type	Required	Description
`morphology`	string	required · none, compression, burst, distraction, rotation_translation	Caller-assigned single most severe injury morphology (Vaccaro 2007). none scores 0; compression scores 1; burst scores 2; distraction scores 3; rotation_translation scores 4. Burst already includes compression; do not sum morphologies. magent does not read imaging.
`dlc`	string	required · intact, indeterminate, disrupted	Caller-assigned disco-ligamentous complex integrity (Vaccaro 2007). intact scores 0; indeterminate scores 1; disrupted scores 2. Not TLICS PLC (0/2/3). magent does not examine the patient or read imaging.
`neuro`	string	required · intact, root, complete, incomplete	Caller-assigned neurologic status (Vaccaro 2007). intact scores 0; root scores 1; complete scores 2; incomplete scores 3. magent does not examine the patient.
`continuous_cord_compression`	boolean	required	Adds 1 only when neuro is not intact (Vaccaro 2007). Must be false when neuro is intact. true or false. magent does not read imaging.

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/slics 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": [
    {
      "continuous_cord_compression": "false",
      "dlc": "intact",
      "morphology": "none",
      "neuro": "intact"
    },
    {
      "continuous_cord_compression": "false",
      "dlc": "intact",
      "morphology": "none",
      "neuro": "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/slics",
  "items": [
    {
      "components": [
        {
          "value": "none",
          "factor": "morphology",
          "points": 0,
          "present": true
        },
        {
          "value": "intact",
          "factor": "dlc",
          "points": 0,
          "present": true
        },
        {
          "value": "intact",
          "factor": "neuro",
          "points": 0,
          "present": true
        },
        {
          "factor": "continuous_cord_compression",
          "points": 0,
          "present": false
        }
      ],
      "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, Hulbert RJ, Patel AA, et al.",
        "doi": "10.1097/brs.0b013e3181557b92",
        "id": "vaccaro-2007",
        "pmid": "17906580",
        "source": "Spine (Phila Pa 1976). 2007;32(21):2365-2374",
        "title": "The subaxial cervical spine injury classification system: a novel approach to recognize the importance of morphology, neurology, and integrity of the disco-ligamentous complex."
      },
      "formula": "slics",
      "formula_expression": "SLICS = morphology (none 0, compression 1, burst 2, distraction 3, rotation_translation 4) + dlc (intact 0, indeterminate 1, disrupted 2) + neuro (intact 0, root 1, complete 2, incomplete 3) + continuous_cord_compression (+1 only when neuro is not intact); Vaccaro 2007; max 10; caller assigns the single most severe morphology; bands 0-3 / 4 / ge_5",
      "max_score": 10,
      "score": 0,
      "slics_band": "0-3"
    },
    {
      "components": [
        {
          "value": "none",
          "factor": "morphology",
          "points": 0,
          "present": true
        },
        {
          "value": "intact",
          "factor": "dlc",
          "points": 0,
          "present": true
        },
        {
          "value": "intact",
          "factor": "neuro",
          "points": 0,
          "present": true
        },
        {
          "factor": "continuous_cord_compression",
          "points": 0,
          "present": false
        }
      ],
      "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, Hulbert RJ, Patel AA, et al.",
        "doi": "10.1097/brs.0b013e3181557b92",
        "id": "vaccaro-2007",
        "pmid": "17906580",
        "source": "Spine (Phila Pa 1976). 2007;32(21):2365-2374",
        "title": "The subaxial cervical spine injury classification system: a novel approach to recognize the importance of morphology, neurology, and integrity of the disco-ligamentous complex."
      },
      "formula": "slics",
      "formula_expression": "SLICS = morphology (none 0, compression 1, burst 2, distraction 3, rotation_translation 4) + dlc (intact 0, indeterminate 1, disrupted 2) + neuro (intact 0, root 1, complete 2, incomplete 3) + continuous_cord_compression (+1 only when neuro is not intact); Vaccaro 2007; max 10; caller assigns the single most severe morphology; bands 0-3 / 4 / ge_5",
      "max_score": 10,
      "score": 0,
      "slics_band": "0-3"
    }
  ]
}

Response

Field	Type	Description
`formula`	string	slics
`formula_expression`	string	Exact expression used
`score`	integer	Vaccaro 2007 SLICS total 0-10
`max_score`	integer	10
`slics_band`	string	Vaccaro 2007 treatment-guidance band: 0-3, 4, or ge_5 (>=5). Not a surgical order.
`components`	array	Per-factor Vaccaro 2007 points
`citation`	object	Vaccaro et al. Spine 2007 citation
`disclaimer`	string	Not-a-device notice

Example JSON

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

{
  "components": [
    {
      "value": "none",
      "factor": "morphology",
      "points": 0,
      "present": true
    },
    {
      "value": "intact",
      "factor": "dlc",
      "points": 0,
      "present": true
    },
    {
      "value": "intact",
      "factor": "neuro",
      "points": 0,
      "present": true
    },
    {
      "factor": "continuous_cord_compression",
      "points": 0,
      "present": false
    }
  ],
  "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, Hulbert RJ, Patel AA, et al.",
    "doi": "10.1097/brs.0b013e3181557b92",
    "id": "vaccaro-2007",
    "pmid": "17906580",
    "source": "Spine (Phila Pa 1976). 2007;32(21):2365-2374",
    "title": "The subaxial cervical spine injury classification system: a novel approach to recognize the importance of morphology, neurology, and integrity of the disco-ligamentous complex."
  },
  "formula": "slics",
  "formula_expression": "SLICS = morphology (none 0, compression 1, burst 2, distraction 3, rotation_translation 4) + dlc (intact 0, indeterminate 1, disrupted 2) + neuro (intact 0, root 1, complete 2, incomplete 3) + continuous_cord_compression (+1 only when neuro is not intact); Vaccaro 2007; max 10; caller assigns the single most severe morphology; bands 0-3 / 4 / ge_5",
  "max_score": 10,
  "score": 0,
  "slics_band": "0-3"
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_slics`	morphology must be none, compression, burst, distraction, or rotation_translation; dlc must be intact, indeterminate, or disrupted; neuro must be intact, root, complete, or incomplete; continuous_cord_compression must be true or false and may be true only when neuro is not intact (Vaccaro 2007 SLICS). Returned before settlement; you are not charged.
400	`invalid_items`	POST body must be a JSON object with only an items array Returned before settlement; you are not charged.
400	`invalid_item_count`	items must be an array of 1 to 25 objects Returned before settlement; you are not charged.
400	`invalid_item`	each items entry must be a JSON object Returned before settlement; you are not charged.

Related tools

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.
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).

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.