{ "model": { "rank": 3254, "code": "thing-q170990", "model_id": "vr.tr.arthritis", "name": "arthritis", "purpose": "Let an agent route possible septic arthritis and severe symptoms to urgent care, give general sourced information on types and management, and refer individual questions to clinicians.", "family": "Thing Registry", "category": "Information and virtual systems", "status": "research-draft", "kind": "thing", "plane": "INF", "domain": "INF.KNW", "industry": "", "version": "", "url": "/models/thing/q170990/", "tier": 2, "score": 88, "payload": { "layer": "wikidata", "aliases": [ "palindromic rheumatism", "psoriatic arthritis", "periarthritis", "acute arthritis", "childhood arthritis", "foot arthritis", "coxitis", "polyarthritis", "reactive arthritis", "shoulder osteoarthritis", "inflammatory arthritis", "rheumatoid arthritis", "Rubella virus arthritis", "discitis", "Reiter disease", "oligoarthritis", "enteropathic arthropathy", "spondylarthritis", "chondrocalcinosis", "osteoarthritis", "knee arthritis", "monoarthritis", "septic arthritis", "psoriasis-related juvenile idiopathic arthritis", "rheumatoid lung disease", "spondylarthrosis", "enthesitis-related juvenile idiopathic arthritis", "juvenile rheumatoid arthritis", "rheumatoid nodule", "arthritis mutilans", "remitting seronegative symmetrical synovitis with pitting edema", "Yersinia arthritis", "malignant rheumatoid arthritis", "Still's disease", "seronegative rheumatoid arthritis", "seropositive rheumatoid arthritis", "Rheumatoid vasculitis", "chondrocalcinosis due to Apatite crystal deposition", "chondrocalcinosis 1", "calcium pyrophosphate dihydrate crystal deposition disease" ], "aliasCount": 65, "merged": 65, "knownIn": 88, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.arthritis", "source": { "dataset": "wikidata", "item": "Q170990", "url": "https://www.wikidata.org/wiki/Q170990", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T14:24:29Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 1, "engine": "claude" }, "metaModel": { "id": "THING-Q170990", "registryId": "vr.tr.arthritis", "name": "arthritis", "version": "0.2.0-wave.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "INF.KNW" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q170990/", "model": { "registry_id": "vr.tr.arthritis", "name": "arthritis", "purpose": "Let an agent route possible septic arthritis and severe symptoms to urgent care, give general sourced information on types and management, and refer individual questions to clinicians.", "definition": "Inflammation of one or more joints, causing pain, swelling and stiffness, with many forms including osteoarthritis, rheumatoid arthritis, psoriatic arthritis, gout, juvenile arthritis and infectious (septic) arthritis; some forms are autoimmune and several are treatable with early care.", "what_it_is_for": "A group of conditions relevant to diagnosis, treatment and daily living.", "affordances": [ "recognise urgent joint symptoms", "find general information on arthritis types", "find support organisations and aids", "understand workplace and daily living adjustments" ], "distinguishing_features": [ "Joint inflammation", "Many types", "Can be autoimmune or degenerative", "Often chronic" ], "appearance": "Swollen, stiff or deformed joints; diagnosed by examination, blood tests and imaging.", "visual_identification": [ "Joint swelling and stiffness", "Symmetrical small joint involvement in some types", "Muscle pain alone is not arthritis" ], "physical_properties": [], "families_and_kinds": [ "osteoarthritis", "rheumatoid arthritis", "psoriatic and other inflammatory arthritis", "gout", "juvenile and septic arthritis" ], "related_models": [ { "relation": "is a kind of", "target": "inflammatory disease", "why": "category" }, { "relation": "affects", "target": "joint and cartilage", "why": "structures" }, { "relation": "is treated by", "target": "rheumatology", "why": "specialty" }, { "relation": "is related to", "target": "cartilage", "why": "tissue" } ], "identifiers": [], "standards_and_regulation": [ "Clinical guidelines on arthritis", "Disability and workplace adjustment law" ], "failure_modes_and_hazards": [ "Missed septic arthritis", "Unproven cure claims", "Agents giving personal treatment advice" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "urgent", "name": "Urgent", "description": "Urgent signs.", "rationale": "Safety comes first.", "layers": [ { "id": "septic", "name": "Septic", "description": "Hot swollen joint.", "findings": [ { "id": "septic-finding", "name": "Septic", "description": "Possible septic arthritis.", "questions": [ { "text": "Is there a suddenly hot, swollen, very painful joint with fever?", "kind": "boundary" }, { "text": "Should the person seek urgent medical care today?", "kind": "action" } ] } ] }, { "id": "flare", "name": "Flare", "description": "Severe flare.", "findings": [ { "id": "flare-finding", "name": "Flare", "description": "Severe flares.", "questions": [ { "text": "Is a flare severe or unlike usual symptoms?", "kind": "boundary" }, { "text": "Should they contact their care team or urgent services?", "kind": "action" } ] } ] } ] }, { "id": "information", "name": "Information", "description": "General facts.", "rationale": "Sourced information only.", "layers": [ { "id": "types", "name": "Types", "description": "Kinds.", "findings": [ { "id": "types-finding", "name": "Types", "description": "Types.", "questions": [ { "text": "What do rheumatology or arthritis organisations say about this type?", "kind": "provenance" }, { "text": "How is it diagnosed in general terms?", "kind": "definition" } ] } ] }, { "id": "personal", "name": "Personal", "description": "Treatment questions.", "findings": [ { "id": "personal-finding", "name": "Personal", "description": "Personal advice limits.", "questions": [ { "text": "Is the user asking about their own diagnosis or medicines?", "kind": "boundary" }, { "text": "How should the agent refer them to their clinician?", "kind": "action" } ] } ] } ] }, { "id": "living", "name": "Living", "description": "Daily life.", "rationale": "Adjustments help.", "layers": [ { "id": "aids", "name": "Aids", "description": "Aids and exercise.", "findings": [ { "id": "aids-finding", "name": "Aids", "description": "Aids and exercise.", "questions": [ { "text": "Which aids, adaptations or supervised exercise programmes do health services recommend?", "kind": "provenance" }, { "text": "Who can assess needs?", "kind": "provenance" } ] } ] }, { "id": "work", "name": "Work", "description": "Workplace adjustments.", "findings": [ { "id": "work-finding", "name": "Work", "description": "Workplace adjustments.", "questions": [ { "text": "Which workplace adjustments or rights apply for people with arthritis here?", "kind": "provenance" }, { "text": "How can they be requested?", "kind": "action" } ] } ] } ] }, { "id": "claims", "name": "Claims", "description": "Evidence and support.", "rationale": "Claims need evidence.", "layers": [ { "id": "cures", "name": "Cures", "description": "Unproven remedies.", "findings": [ { "id": "cures-finding", "name": "Cures", "description": "Unproven remedies.", "questions": [ { "text": "Is a claimed arthritis cure or supplement supported by evidence?", "kind": "boundary" }, { "text": "What do reviews or regulators say?", "kind": "provenance" } ] } ] }, { "id": "support", "name": "Support", "description": "Organisations.", "findings": [ { "id": "support-finding", "name": "Support", "description": "Support organisations.", "questions": [ { "text": "Which charities and helplines support people with arthritis?", "kind": "provenance" }, { "text": "Are there groups for young people?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Should arthritis types be separate entries?", "How should guidelines be linked?", "How should support services be localised?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "disease or condition", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a arthritis, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent route possible septic arthritis and severe symptoms to urgent care, give general sourced information on types and management, and refer individual questions to clinicians.", "characteristics": { "substance": "information", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "read and interpreted" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: palindromic rheumatism, psoriatic arthritis, periarthritis, acute arthritis, childhood arthritis, foot arthritis, coxitis, polyarthritis, reactive arthritis, shoulder osteoarthritis, inflammatory arthritis, rheumatoid arthritis.", "65 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 88 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a arthritis, and on what evidence are they told apart?" ], "whatItIsMadeOf": "content that has to be carried by something else", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "read it and act on what it says" ], "howItIsRecognised": [ "Recognised by criteria applied to signs and findings, not by appearance. Two conditions can look identical and be distinguished only by test." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "palindromic rheumatism", "psoriatic arthritis", "periarthritis", "acute arthritis", "childhood arthritis", "foot arthritis", "coxitis", "polyarthritis", "reactive arthritis", "shoulder osteoarthritis", "inflammatory arthritis", "rheumatoid arthritis" ] } ], "standing": "Described in 88 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 65 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one arthritis from another, and a arthritis from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a arthritis, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a arthritis, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a arthritis is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a arthritis, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a arthritis, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a arthritis is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a arthritis sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a arthritis, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a arthritis, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a arthritis is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a arthritis from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a arthritis, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a arthritis, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a arthritis is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a arthritis passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a arthritis between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a arthritis, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a arthritis, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a arthritis is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a arthritis, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a arthritis is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a arthritis, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a arthritis, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a arthritis is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "content-and-access", "name": "Content, encoding and access", "description": "What a arthritis says, how it is encoded and who may read it.", "rationale": "An informational thing carries content that can be copied, versioned and withheld, none of which its physical carrier explains.", "layers": [ { "id": "content-and-encoding", "name": "Content and encoding", "description": "The content itself, its format and its language.", "findings": [ { "id": "content-and-format", "name": "Content, format and language", "description": "What a arthritis contains and in what form it is held.", "questions": [ { "id": "content-and-format-q01", "text": "What identifies and describes the content of a arthritis, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "content-and-format-q02", "text": "Who or what asserted this about the content of a arthritis, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "content-and-format-q03", "text": "What may an agent decide or do once the content of a arthritis is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "access-and-rights", "name": "Access, rights and retention", "description": "Who may read, copy or change it, and for how long it is kept.", "findings": [ { "id": "access-rules", "name": "Access rules and retention", "description": "The permissions attached to a arthritis and the period it survives.", "questions": [ { "id": "access-rules-q01", "text": "What identifies and describes access to a arthritis, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "access-rules-q02", "text": "Who or what asserted this about access to a arthritis, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "access-rules-q03", "text": "What may an agent decide or do once access to a arthritis is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "diagnosis-and-criteria", "name": "Diagnosis, criteria and coding", "description": "What makes a case of arthritis a case, and under which revision.", "rationale": "Criteria change between revisions, so a diagnosis without its coding revision cannot be compared with a later one.", "layers": [ { "id": "criteria", "name": "Diagnostic criteria", "description": "The criteria in force and who issues them.", "findings": [ { "id": "criteria-record", "name": "Criteria, issuer and revision", "description": "What must be true for a diagnosis, according to whom.", "questions": [ { "id": "criteria-record-q01", "text": "What criteria define arthritis, issued by which body, in which revision?", "kind": "definition" }, { "id": "criteria-record-q02", "text": "What changed between revisions that would reclassify existing cases?", "kind": "boundary" } ] } ] }, { "id": "coding", "name": "Coding and terminology", "description": "The codes used to record it and their mapping.", "findings": [ { "id": "coding-record", "name": "Codes and mappings", "description": "Which classification codes apply and how they map.", "questions": [ { "id": "coding-record-q01", "text": "Which classification and terminology codes cover arthritis, and how do they map to each other?", "kind": "definition" }, { "id": "coding-record-q02", "text": "What is lost when a case is mapped from one scheme to another?", "kind": "boundary" } ] } ] } ] }, { "id": "course-and-population", "name": "Course, population and care", "description": "How arthritis develops, whom it affects, and what is done about it.", "rationale": "The condition, the diagnosis and the episode of care are three different things, and an agent must not merge them.", "layers": [ { "id": "course", "name": "Course and stages", "description": "Onset, progression, remission and outcome.", "findings": [ { "id": "course-record", "name": "Stages and transitions", "description": "The stages recorded and what moves a case between them.", "questions": [ { "id": "course-record-q01", "text": "What course does arthritis typically take, and what marks each stage?", "kind": "definition" }, { "id": "course-record-q02", "text": "What separates the condition itself from an episode of care for it?", "kind": "boundary" } ] } ] }, { "id": "population", "name": "Affected populations", "description": "Who is affected, how often, and on what evidence.", "findings": [ { "id": "epidemiology", "name": "Prevalence and its basis", "description": "Rates with their population, period and source.", "questions": [ { "id": "epidemiology-q01", "text": "What prevalence or incidence is reported for arthritis, in which population and period?", "kind": "measurement" }, { "id": "epidemiology-q02", "text": "What may an agent not conclude about an individual from a population rate?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a arthritis came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a arthritis and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a arthritis, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a arthritis, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a arthritis is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a arthritis is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a arthritis, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a arthritis, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a arthritis is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 6, "layers": 12, "findings": 14, "questions": 38 } } } }