TABLE 1.
Electrodiagnostic Study
| Nerve Conduction Study | ||||||
|---|---|---|---|---|---|---|
| Nerve | Type | Recording | Side | Amplitude (mV) | Conduction velocity (m/s) | Distal Latency (ms) |
| Fibular | M | EDB | Left | NR (>2.0) | NR (>41) | NR (<6.6) |
| Fibular | M | TA | Left | 1.3 (>5.1) | 37 (>43) | 6.6 (<6.8) |
| Tibial | M | AH | Left | NR | NR | NR |
| Sural | S | Ankle | Left | NR | NR | NR |
| Median | M | APB | Left | 0.8 (>4.0) | 26 (>48) | 4.6 (<4.5) |
| Musculocutaneous | M | Biceps | Left | 1.9 (>4.0) | 3.5 (<3.4) | |
| Ulnar | M | ADM | Left | 1.0 (>6.0) | 26 ( >51) | 3.7 (<3.6) |
| Median | S | Index | Left | 3.0 uv (>15) | 3.9 (<3.6) | |
| Ulnar | S | Fifth | Left | 5.0 uv (>10 ) | 3.8 (<3.1) | |
| Electromyography | ||||||
|---|---|---|---|---|---|---|
| Muscle | Side | Insertional Activity |
Fibrillations | Reduced recruitment |
Long Duration |
High Amplitude |
| Thoracic PSP | Left | Increased | + | + | ||
| FDI | Right | Increased | +++ | ++ | + | + |
| PT | Right | Increased | +++ | +++ | ||
| Triceps | Right | Increased | ++ | +++ | + | + |
| Deltoid | Right | Increased | ++ | + | + | |
| Gmax | Left | Increased | + | + | ||
| Lumbar PSP | Left | Increased | + | |||
| TA | Left | Increased | +++ | +++ | ||
| MG | Left | Increased | +++ | +++ | + | + |
| VM | Left | Increased | +++ | +++ | + | + |
| TFL | Left | Increased | + | + | ||
All amplitudes are those obtained with distal stimulation. mV, millivolt; m/s, meters per second; ms, millisecond; M, motor; EDB, extensor digitorum brevis; NR, no response; TA, tibialis anterior; S, sensory; APB, abductor pollicis brevis; ADM, abductor digiti minimi; PSP, paraspinal, FDI, first dorsal interosseous; PT, pronator teres; Gmax, gluteus maximus; MG, medial gastrocnemius; VM, vastus medialis; TFL, tensor fasciae latae; L/R, left right.