NERVE LIBRARY · Upper limb
Long thoracic nerve
Long thoracic nerve
Medial scapular winging during a wall push may indicate serratus anterior weakness.
- Roots / nucleus
- C5–C7
- Function
- Motor
- 3D protocols
- Advanced localization guide
01Course and sensory territory
No cutaneous territory; arises directly from ventral root rami.
02Motor supply
Serratus anterior.
03Localization clues
Medial scapular winging during a wall push may indicate serratus anterior weakness.
04Combine the studies
Characterize the winging pattern and compare trapezius, rhomboids and other C5–C7 muscles.
Related muscles
Connect to a clinical question
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References and further reading
- Upper Extremity Proximal Mononeuropathies ↗AAPM&R KnowledgeNow · Society educational review · Link accessed 2026-09-08
- Electrodiagnosis of Radiculopathies ↗AAPM&R KnowledgeNow · Society educational review · 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.