{ "model": { "rank": 11252, "code": "thing-q1162164", "model_id": "vr.tr.clubfoot", "name": "clubfoot", "purpose": "Let an agent explain clubfoot, relay types, causes, prenatal detection and the Ponseti method from orthopaedic and global health sources, describe the named forms and flag the loosely filed alias, and distinguish clubfoot from positional talipes, metatarsus adductus, vertical talus and flat feet, without individual medical advice.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.STA", "industry": "", "version": "", "url": "/models/thing/q1162164/", "tier": 2, "score": 42, "payload": { "layer": "wikidata", "aliases": [ "talipes calcaneus", "bilateral talipes equinovarus", "familial clubfoot due to 17q23.1q23.2 microduplication", "familial clubfoot with or without associated lower limb anomalies", "familial clubfoot due to 5q31 microdeletion", "familial clubfoot due to PITX1 point mutation" ], "aliasCount": 6, "merged": 6, "knownIn": 42, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q1162164", "url": "https://www.wikidata.org/wiki/Q1162164", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-14T01:02:47Z", "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": 4, "engine": "claude" }, "metaModel": { "id": "THING-Q1162164", "registryId": "vr.tr.clubfoot", "name": "clubfoot", "version": "0.2.0-wave.4", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.STA" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q1162164/", "model": { "registry_id": "vr.tr.clubfoot", "name": "clubfoot", "purpose": "Let an agent explain clubfoot, relay types, causes, prenatal detection and the Ponseti method from orthopaedic and global health sources, describe the named forms and flag the loosely filed alias, and distinguish clubfoot from positional talipes, metatarsus adductus, vertical talus and flat feet, without individual medical advice.", "definition": "A congenital deformity in which one or both feet are turned inward and downward, most commonly talipes equinovarus, present in roughly 1 in 1,000 births and more often in boys, usually idiopathic but sometimes associated with neuromuscular or genetic conditions, including familial forms the registry aliases name such as clubfoot due to PITX1 mutation, 5q31 microdeletion or 17q23 microduplication and bilateral forms; talipes calcaneus, where the foot is turned upward, is a different positional deformity that appears loosely filed. The Ponseti method of gentle serial casting, tendon release and bracing, developed by Ignacio Ponseti, is the standard treatment worldwide and is highly effective when started early, and families should be referred to trained clinicians.", "what_it_is_for": "Not applicable; a birth condition.", "affordances": [ "explain types and causes", "relay the Ponseti method", "describe named forms", "relay global access programmes" ], "distinguishing_features": [ "Present at birth", "Rigid deformity", "Casting-based treatment", "Good outcomes with early care" ], "appearance": "A foot turned inward and downward with a deep crease, sometimes smaller than the other foot.", "visual_identification": [ "Congenital inward and downward foot deformity", "Talipes calcaneus, bilateral talipes equinovarus, familial clubfoot due to 17q23 microduplication, familial clubfoot with lower limb anomalies, familial clubfoot due to 5q31 microdeletion, familial clubfoot due to PITX1 mutation", "Positional talipes corrects easily; metatarsus adductus bends the forefoot; vertical talus is rigid flatfoot; flat feet lack an arch" ], "physical_properties": [ { "quantity": "incidence", "typical_range": "about 1 in 1,000 births", "unit": "note", "note": "varies by population" }, { "quantity": "Ponseti method", "typical_range": "developed 1940s-1950s", "unit": "note", "note": "University of Iowa" }, { "quantity": "bracing", "typical_range": "typically until about 4-5 years at night", "unit": "note", "note": "per protocols" } ], "families_and_kinds": [ "idiopathic clubfoot", "syndromic clubfoot", "familial genetic clubfoot", "bilateral and unilateral clubfoot" ], "related_models": [ { "relation": "is a kind of", "target": "foot deformity", "why": "in registry terms" }, { "relation": "is treated by", "target": "Ponseti method", "why": "" }, { "relation": "is contrasted with", "target": "metatarsus adductus", "why": "" }, { "relation": "is contrasted with", "target": "talipes calcaneus", "why": "loosely filed alias" } ], "identifiers": [], "standards_and_regulation": [ "Ponseti International Association guidance", "Prenatal ultrasound screening guidelines" ], "failure_modes_and_hazards": [ "Late or no treatment causing disability", "Brace non-adherence and relapse", "Treating positional deformity as clubfoot" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What clubfoot is.", "rationale": "Science.", "layers": [ { "id": "definition", "name": "Definition", "description": "Definition.", "findings": [ { "id": "definition-finding", "name": "Definition", "description": "Definition.", "questions": [ { "text": "What is clubfoot, and how does it differ from positional talipes, metatarsus adductus, vertical talus and flat feet?", "kind": "definition" }, { "text": "Is a baby diagnosed with clubfoot, in which case a clinician trained in the Ponseti method should start care early?", "kind": "boundary" } ] } ] }, { "id": "forms", "name": "Forms", "description": "Named forms.", "findings": [ { "id": "forms-finding", "name": "Forms", "description": "Forms.", "questions": [ { "text": "What are bilateral and familial genetic forms, and why is talipes calcaneus different?", "kind": "definition" }, { "text": "Which entry fits the specific form?", "kind": "action" } ] } ] } ] }, { "id": "causes", "name": "Causes", "description": "Causes.", "rationale": "Science.", "layers": [ { "id": "genetics", "name": "Genetics", "description": "Genetic factors.", "findings": [ { "id": "genetics-finding", "name": "Genetics", "description": "Genetics.", "questions": [ { "text": "What genetic factors such as PITX1 are linked to clubfoot?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "prenatal", "name": "Prenatal detection", "description": "Ultrasound detection.", "findings": [ { "id": "prenatal-finding", "name": "Prenatal detection", "description": "Prenatal detection.", "questions": [ { "text": "How is clubfoot detected on prenatal ultrasound?", "kind": "provenance" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] } ] }, { "id": "treatment", "name": "Treatment", "description": "Ponseti method.", "rationale": "Attribution.", "layers": [ { "id": "ponseti", "name": "Ponseti", "description": "Casting and bracing.", "findings": [ { "id": "ponseti-finding", "name": "Ponseti", "description": "Ponseti.", "questions": [ { "text": "What are the steps of the Ponseti method, in general terms?", "kind": "provenance" }, { "text": "Which entry fits Ponseti method?", "kind": "action" } ] } ] }, { "id": "relapse", "name": "Relapse", "description": "Relapse and bracing.", "findings": [ { "id": "relapse-finding", "name": "Relapse", "description": "Relapse.", "questions": [ { "text": "Why does brace adherence matter, as outcome studies report?", "kind": "provenance" }, { "text": "Is the information current?", "kind": "boundary" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "Global health.", "rationale": "Attribution.", "layers": [ { "id": "global", "name": "Global", "description": "Global programmes.", "findings": [ { "id": "global-finding", "name": "Global", "description": "Global.", "questions": [ { "text": "How have programmes expanded Ponseti treatment in low-income countries, as organisations report?", "kind": "provenance" }, { "text": "Is the presentation neutral and attributed?", "kind": "boundary" } ] } ] }, { "id": "history", "name": "History", "description": "Ignacio Ponseti.", "findings": [ { "id": "history-finding", "name": "History", "description": "History.", "questions": [ { "text": "How did Ignacio Ponseti develop and promote his method?", "kind": "provenance" }, { "text": "Which entry fits Ignacio Ponseti?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "The registry alias talipes calcaneus should be moved to its own entry", "Should familial genetic forms be separate entries?", "How should global clubfoot programmes be linked?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "abstract concept", "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 clubfoot, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain clubfoot, relay types, causes, prenatal detection and the Ponseti method from orthopaedic and global health sources, describe the named forms and flag the loosely filed alias, and distinguish clubfoot from positional talipes, metatarsus adductus, vertical talus and flat feet, without individual medical advice.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: talipes calcaneus, bilateral talipes equinovarus, familial clubfoot due to 17q23.1q23.2 microduplication, familial clubfoot with or without associated lower limb anomalies, familial clubfoot due to 5q31 microdeletion, familial clubfoot due to PITX1 point mutation.", "6 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 42 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 clubfoot, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "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": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about." ], "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": [ "talipes calcaneus", "bilateral talipes equinovarus", "familial clubfoot due to 17q23.1q23.2 microduplication", "familial clubfoot with or without associated lower limb anomalies", "familial clubfoot due to 5q31 microdeletion", "familial clubfoot due to PITX1 point mutation" ] } ], "standing": "Described in 42 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 6 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 clubfoot from another, and a clubfoot 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 clubfoot, 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 clubfoot, 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 clubfoot 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 clubfoot, 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 clubfoot, 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 clubfoot 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 clubfoot 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 clubfoot, 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 clubfoot, 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 clubfoot 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 clubfoot from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a clubfoot, 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 clubfoot, 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 clubfoot 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 clubfoot 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 clubfoot between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a clubfoot, 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 clubfoot, 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 clubfoot 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 clubfoot, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a clubfoot 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 clubfoot, 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 clubfoot, 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 clubfoot is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definitions-in-contest", "name": "Definitions and who holds them", "description": "What clubfoot is taken to mean, and by whom.", "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.", "layers": [ { "id": "competing-definitions", "name": "Competing definitions", "description": "The main readings and the traditions behind them.", "findings": [ { "id": "definition-map", "name": "Definitions and their holders", "description": "Each definition with the school or body that holds it.", "questions": [ { "id": "definition-map-q01", "text": "Which definitions of clubfoot are in use, and which tradition or body holds each?", "kind": "definition" }, { "id": "definition-map-q02", "text": "What turns on the difference between them in practice?", "kind": "boundary" } ] } ] }, { "id": "operationalisation", "name": "Operationalisation", "description": "How it is measured or applied when it has to be.", "findings": [ { "id": "operational-record", "name": "Measures and proxies", "description": "Instruments and indicators used to stand in for it.", "questions": [ { "id": "operational-record-q01", "text": "How is clubfoot operationalised or measured in practice, and by what instrument?", "kind": "measurement" }, { "id": "operational-record-q02", "text": "What does that operationalisation leave out, and when does that matter?", "kind": "boundary" } ] } ] } ] }, { "id": "instances-and-use", "name": "Instances, use and consequence", "description": "What counts as an instance of clubfoot and what follows from calling something that.", "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.", "layers": [ { "id": "instances", "name": "What counts as an instance", "description": "Clear cases, borderline cases and non-cases.", "findings": [ { "id": "instance-tests", "name": "Tests for an instance", "description": "What would settle whether something falls under it.", "questions": [ { "id": "instance-tests-q01", "text": "What would settle whether something is an instance of clubfoot?", "kind": "boundary" }, { "id": "instance-tests-q02", "text": "Which borderline cases are argued about, and on what grounds?", "kind": "definition" } ] } ] }, { "id": "consequence", "name": "Consequence of application", "description": "Rights, duties or decisions that follow from the label.", "findings": [ { "id": "consequence-record", "name": "What the label licenses", "description": "What an agent may do once something is classified this way.", "questions": [ { "id": "consequence-record-q01", "text": "What follows practically once something is treated as clubfoot?", "kind": "action" }, { "id": "consequence-record-q02", "text": "What must an agent not infer from the label alone?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a clubfoot 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 clubfoot and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a clubfoot, 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 clubfoot, 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 clubfoot 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 clubfoot is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a clubfoot, 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 clubfoot, 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 clubfoot is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 10, "findings": 12, "questions": 32 } } } }