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Nerve cross-sectional area reference values
| Nerve | Site | Mean±SD (mm2) | Reference range (mm2) |
|---|---|---|---|
| Median | Wrist | 6.4±1.4 | 3.6-9.2 |
| Mid-forearm | 5.2±1.0 | 3.2-7.2 | |
| Elbow | 6.8±1.5 | 3.8-9.8 | |
| Mid arm | 7.1±1.4 | 4.3-9.9 | |
| Ulnar | Wrist | 4.0±1.0 | 2.0-6.0 |
| Mid-forearm | 4.6±1.0 | 2.6-6.6 | |
| Elbow | 6.1±1.4 | 3.3-8.9 | |
| Midarm | 5.6±1.5 | 2.6-8.6 | |
| Fibular | Fibular head | 8.9±2.0 | 4.9-12.9 |
| Knee | 7.5±1.8 | 3.9-11.1 | |
| Tibial | Knee | 11.8±2.2 | 7.4-16.2 |
| Ankle | 10.1±2.0 | 6.1-14.1 | |
| Sural | 1.5±0.6 | 0.3-2.7 | |
| Radial | 1.1±0.3 | 0.5-1.7 |
SD: Standard deviation
