NERVE LIBRARY · Lower limb

Sciatic nerve

Sciatic nerve

Fibular-division involvement is often more prominent and may resemble an isolated foot drop.

Roots / nucleus
L4–S3
Function
Mixed
3D protocols
3 related protocols

01Course and sensory territory

Supplies much of the lower leg and foot through tibial and common fibular divisions.

02Motor supply

Hamstrings and most muscles below the knee; the short head of biceps femoris has fibular-division supply.

03Localization clues

Fibular-division involvement is often more prominent and may resemble an isolated foot drop.

04Combine the studies

Combine fibular/tibial motor, sural/superficial fibular sensory and selected hamstring, tibialis posterior, gluteal and paraspinal muscles.

Explore the related 3D protocols

Fibular (peroneal) motorG1 / G2 / Stimulation ↗Tibial motorG1 / G2 / Stimulation ↗Sural sensoryG1 / G2 / Stimulation ↗

These retain the existing source-supported landmarks and references. The 3D model is educational; clinical work requires palpation and measured distances.

Related muscles

Biceps femoris, short head · L5–S1Biceps femoris, long head · L5–S2

Connect to a clinical question

A localization pathway for foot drop
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References and further reading

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.