NERVE LIBRARY · Lower limb
Sural nerve
Sural nerve
A commonly tested sensory nerve in length-dependent polyneuropathy assessment.
- Roots / nucleus
- Predominantly S1–S2
- Function
- Sensory
- 3D protocols
- 1 related protocols
01Course and sensory territory
Posterolateral calf, behind the lateral ankle and along the lateral foot.
02Motor supply
No motor supply.
03Localization clues
A commonly tested sensory nerve in length-dependent polyneuropathy assessment.
04Combine the studies
Interpret with another lower-limb sensory nerve and motor studies using age- and method-matched limits.
Explore the related 3D protocols
These retain the existing source-supported landmarks and references. The 3D model is educational; clinical work requires palpation and measured distances.
Connect to a clinical question
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References and further reading
- Peripheral Polyneuropathy Part 1: Evaluation and Differential Diagnosis ↗AAPM&R KnowledgeNow · Society educational review · Link accessed 2026-09-08
- Electrodiagnostic reference values for upper and lower limb nerve conduction studies in adult populations (2016) ↗AANEM · Evidence-based reference data · Link accessed 2026-09-08
Educational synthesis; independent neuromuscular specialist review is pending. Publication dates and compilation dates are distinct. This is an original teaching synthesis; consult the source for complete methods and criteria.