Area of sensory loss | Level |
Cervical spine | |
Supraclavicular fossa | C3 |
Top of acromioclavicular point | C4 |
Lateral antecubital fossa | C5 |
Thumb | C6 |
Middle finger | C7 |
Little finger | C8 |
Thoracic spine | |
Ulnar side of antecubital fossa | T1 |
Apex of axilla | T2 |
Fourth intercostal space (nipple line) | T4 |
Tenth intercostal space (umbilicus) | T10 |
Midpoint of inguinal ligament | T12 |
Lumbar spine | |
Halfway between T12 and L2 | L1 |
Mid-anterior thigh | L2 |
Medial femoral condyle | L3 |
Medial malleolus | L4 |
Dorsum of third metatarsophalangeal joint | L5 |
Sacral spine | |
Lateral heel | S1 |
Midline popliteal fossa | S2 |
Ischial tuberosity | S3 |
Perianal | S4-5 |
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