Table 1.
Motor nerve conduction studies
| Distal latency, ms | Amplitude, mV | Conduction velocity, m/s | F latency, ms | ||
|---|---|---|---|---|---|
| Left median nerve | |||||
| Wrist–abductor pollicis brevis | 3·77 (normal ≤3·8) | 5·90 (normal ≥4) | .. | .. | |
| Antecubital fossa–wrist | 7·96 | 5·70 | 51 (normal ≥50) | .. | |
| Left ulnar nerve | |||||
| Wrist-abductor digiti minimi | 3·04 (normal ≤3·0) | 6·60 (normal ≥6) | .. | Absent F (normal ≤31) | |
| Below elbow–wrist | 6·54 | 6·80 | 56 (normal ≥50) | .. | |
| Above elbow–below elbow | 8·29 | 6·60 | 57 | .. | |
| Left tibial nerve | |||||
| Ankle-abductor hallucis brevis | 7·81 (normal ≤5·1) | 7·30 (normal ≥4) | .. | Absent F (normal ≤56) | |
| Popliteal fossa–ankle | 17·11 | 4·80 | 43 (normal ≥40) | .. | |
| Right tibial nerve | |||||
| Ankle-abductor hallucis brevis | 6·65 (normal ≤5·1) | 8·00 (normal ≥4) | .. | Absent F (normal ≤56) | |
| Popliteal fossa–ankle | 15·95 | 6·00 | 43 (normal ≥40) | .. | |
| Left peroneal nerve | |||||
| Ankle-extensor digitorum brevis | 5·21 (normal ≤5·5) | 1·87 (normal ≥2) | .. | .. | |
| Below fibula–ankle | 12·50 | 1·49 | 43 (normal ≥42) | .. | |
| Right peroneal nerve | |||||
| Ankle–extensor digitorum brevis | 11·30 (normal ≤5·5) | 2·90 (normal ≥2) | .. | .. | |
| Below fibula–ankle | 18·20 | 2·70 | 43 (normal ≥42) | .. | |