genitofemoral nerve
Enable an agent to identify a genitofemoral nerve, record its branch-specific anatomy and functional state, and support assessment or procedural planning without treating groin symptoms as proof of nerve injury.
Bundle → Layer → Finding → Questions Filled
5 bundles · 9 layers · 15 findings · 23 questions
Identity and origin Establish which anatomical structure the record represents.
Instance boundary
Anchor the nerve to an individual anatomical context.
Side and record target
Record whether evidence concerns the anatomical kind, a unilateral nerve, or a particular branch.
- Does this record describe the registered kind or a nerve in a particular person or specimen? definition
- Which side and branch does each observation actually concern? boundary
Plexus continuity
Distinguish demonstrated origin from expected origin.
Origin evidence
Capture the evidence connecting the candidate nerve to the lumbar plexus.
- Were root contributions directly traced, inferred from landmarks, or copied from reference anatomy? provenance
- What evidence distinguishes this structure from a neighboring lumbar plexus nerve? boundary
Course and branching Represent the trunk and divergent routes of its branches.
Psoas course
Locate the nerve relative to psoas major and document the visible segment.
Course localization
Preserve observed landmarks, continuity, and gaps in visualization.
- Which segment is demonstrated relative to psoas major, and by what method? provenance
- Where does the nerve divide relative to recorded anatomical landmarks? measurement
Branch routes
Follow genital and femoral branches independently.
Branch assignment
Base branch labels on traced relationships and retain unresolved or variant configurations.
- What observed route supports labeling this segment genital or femoral? definition
- Are there separate origins, additional divisions, or communicating branches that prevent the usual two-branch description? boundary
Territories and function Connect individual branch anatomy with assessed sensory and motor function.
Sensory mapping
Record modality-specific findings in the groin and upper thigh.
Observed sensory territory
Keep the measured body map separate from its proposed nerve attribution.
- Which precisely mapped areas show altered sensation, with which testing modality and comparison? measurement
- Where could neighboring nerve territories explain the same findings? boundary
Cremaster function
Assess relevant genital-branch motor evidence in its anatomical context.
Motor and reflex evidence
Distinguish observed contraction or reflex response from conclusions about the responsible pathway.
- Is cremaster assessment anatomically applicable, and what response was observed under which examination conditions? measurement
- What evidence separates genital-branch dysfunction from other explanations for an altered response? boundary
Condition and procedural relations Record suspected or demonstrated nerve impairment and its relationship to interventions.
Impairment attribution
Evaluate evidence that dysfunction involves this nerve or a specific branch.
Lesion evidence
Link symptoms and structural observations to a proposed lesion site with explicit uncertainty.
- What supports the suspected site and mechanism: symptom mapping, imaging, operative observation, or another examination? provenance
- What remains unresolved between a branch lesion, proximal lesion, neighboring nerve involvement, and a non-neural cause? boundary
Intervention accountability
Make nerve-related procedural planning and follow-up reviewable.
Target, exposure, and outcome
Record the intended branch, demonstrated anatomical relationships, and subsequent functional observations.
- Which nerve segment is targeted or exposed, and what localization evidence is available for the responsible clinician? action
- What changed from baseline after intervention, over what interval, and could effects on neighboring structures explain the change? measurement
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these check these first hold for the sense of genitofemoral nerve this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these identifiers and schemes hold for the sense of genitofemoral nerve this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these standards and regulation hold for the sense of genitofemoral nerve this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these real-world use hold for the sense of genitofemoral nerve this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these failure modes and hazards hold for the sense of genitofemoral nerve this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these regional variation hold for the sense of genitofemoral nerve this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of genitofemoral nerve this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.LIV
- Other names and narrower kinds
- right genitofemoral nerve, left genitofemoral nerve
What it is Filled
The genitofemoral nerve is a paired peripheral nerve of the lumbar plexus, usually arising from the anterior rami of L1 and L2, whose genital and femoral branches supply sensation to parts of the external genital region and upper anterior thigh, with the genital branch also supplying the cremaster muscle in males.
In scope
- Individual nerve identity, laterality, and anatomical context
- Lumbar plexus origin and course relative to psoas major
- Genital and femoral branches, including observed variations
- Sensory territories and branch-specific motor function
- Evidence of nerve dysfunction, injury, and procedural exposure
Out of scope
- The whole organism, its taxonomy, or population characteristics
- The lumbar plexus and spinal roots except their relationship to this nerve
- Ilioinguinal, iliohypogastric, femoral, and pudendal nerves as independent structures
- Genitofemoral neuralgia as a disease model or a complete groin-pain diagnostic pathway
- Inguinal hernias, reproductive organs, and operative procedures as independently modeled things
Why it exists Filled
Enable an agent to identify a genitofemoral nerve, record its branch-specific anatomy and functional state, and support assessment or procedural planning without treating groin symptoms as proof of nerve injury.
Distinguishing features Filled
- The typical human nerve arises from L1-L2 and reaches the anterior surface of psoas major; identification should follow anatomical continuity rather than a groin label alone.
- Its genital and femoral branches must be distinguished: the genital branch follows the inguinal route, while the femoral branch supplies an upper anterior thigh territory.
- The genital branch supplies cremaster motor function where that muscle is present; the femoral branch must not be mistaken for the separate femoral nerve.
- Sensory distribution is supporting evidence rather than an exclusive identity test because neighboring nerve territories overlap. Anatomical reference: [Genitofemoral Nerve](https://www.ncbi.nlm.nih.gov/sites/books/NBK430733/).
What robots and AI may and may not do Filled
Must not
- Diagnose nerve entrapment or injury from reported pain.
- Recommend nerve blocks or surgery for a specific person.
- Produce sexualised content when discussing the genital region.
- Disclose a person's medical records without consent.
Only with a human decision
- Any treatment decision for chronic groin pain.
May
- Explain the anatomy and sensory supply of the genitofemoral nerve in general terms.
- Suggest that a person with lasting groin pain after surgery see their surgeon or a pain specialist.
Moral aspects Filled
- Chronic groin pain after hernia repair is common and often dismissed; patients deserve to be heard.
- Discussion of the genital region requires dignity and plain clinical language.
Who is affected
- Patients after hernia or pelvic surgery
- People with chronic pain
- Their partners
Owners Filled
Steward
Nobody owns it; it is part of each person's body.
Links to other meta-models Filled
parent
- Q66514041 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.genitofemoral-nerve
- Wikidata: Q1523307 (https://www.wikidata.org/wiki/Q1523307)
Direct properties required Filled
- Instance and laterality: Anatomical kind or individual instance; left, right, or unspecified
- Observed root contribution: Linked spinal nerve contributions; typical reference L1-L2; observed variant or unknown
- Branch identity: Common trunk, genital branch, femoral branch, variant branch, or unresolved
- Course and branching pattern: Observed course relative to psoas major, inguinal ligament, inguinal canal, and local vessels
- Mapped sensory function: Preserved, reduced, absent, increased, painful, or unassessed; with modality and body map
- Cremaster response: Present, reduced, absent, not assessable, or not applicable; with examination context
- Structural continuity: Apparently intact, compressed, scar-associated, disrupted, or indeterminate
- Distance to planned intervention: Millimetres, with landmark, imaging plane, method, and uncertainty
Recognition required Filled
- A nerve emerging on the front of the psoas muscle in the lower abdomen and dividing into genital and femoral branches.
Capabilities and actions required Filled
- Identify a candidate nerve or branch from documented anatomical relationships.
- Compare observed branching and course with reference anatomy while retaining variants.
- Map sensory and motor observations to candidate branches and competing explanations.
- Flag proximity to a planned groin or retroperitoneal intervention for clinician review.
- Track branch-specific findings before and after an intervention.
Hazards and failure modes required Filled
- Can be trapped or damaged during hernia repair or other pelvic surgery, causing chronic pain.
- Injury can reduce the cremaster reflex in males.
Standards and interfaces required Filled
- Terminologia Anatomica, issued by the Federative International Programme for Anatomical Terminology under the International Federation of Associations of Anatomists, provides standardized anatomical nomenclature for the genitofemoral nerve and its branches.
Context of use required Filled
- The genitofemoral nerve is encountered in anatomical study and clinical assessment of sensation in parts of the groin and upper anterior thigh.
- Its course and branches are relevant to planning and interpreting procedures involving the posterior abdominal wall and inguinal region.
- Overlapping sensory territories and anatomical variation make isolated symptoms insufficient to identify this nerve as their source.
Sources Filled
- Wikidata item Q1523307: genitofemoral nerve - identity and sense of the item
- Wikipedia: Genitofemoral nerve - general description of the item
Open questions
- Does the registry intend human anatomy only, or must species-specific homologues be supported?
- Which anatomical studies establish the frequency and practical significance of root, branching, and communicating-branch variants?
- How consistently can available examination and imaging methods distinguish genital-branch, femoral-branch, and neighboring nerve involvement?
- What evidence supports the diagnostic specificity of a targeted block when local anesthetic may spread to adjacent nerves?
- Does an existing Vercy peripheral nerve or lumbar plexus publication already own this concept, requiring a link rather than a separate publication?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q1523307/spec.json