Table 1.
Longitudinal changes in motor function
| Duration from onset | Onset | 6 weeks | 10 weeks | 16 weeks | |
|---|---|---|---|---|---|
| MRC |
Shoulder abductor |
0 |
2− |
2 |
3 |
| Elbow flexor |
0 |
3 |
3+ |
3+ |
|
| Finger flexor |
0 |
3+ |
3+ |
4 |
|
| Finger extensor |
0 |
3+ |
3+ |
4 |
|
| Hip flexor |
0 |
2+ |
3 |
3+ |
|
| Knee extensor |
0 |
3− |
3+ |
4 |
|
| Ankle dorsiflexor |
0 |
3 |
4 |
4 |
|
| MEP | Latency |
|
21.7 |
22.6 |
21.8 |
| Amplitude |
|
300 |
800 |
2400 |
|
| ET(%) | 95 | 95 | 80 | ||
MRC: Medical Research Council scale. 0; no contraction, 1; palpable contraction, but no visible movement, 2; movement without gravity, 3; movement against gravity, 4; movement against a resistance lower than the resistance overcome by the healthy side, 5; movement against a resistance equal to the maximum resistance overcome by the healthy side. MEP: motor evoked potential, ET: excitatory threshold.