| 0 |
No increase in muscle tone |
| 1 |
Slight increase in muscle tone, manifested by a catch and release or by minimal resistance at the end of a range of motion when the affected part(s) are moved in flexion or extension |
| 1+ |
Slight increase in muscle tone, manifested by a catch, followed my minimal resistance throughout the remainder (less than half) of the range of motion |
| 2 |
More marked increase in muscle tone through most of the range of motion, but affected part(s) easily moved |
| 3 |
Considerable increase in muscle tone, passive movement difficult |
| 4 |
Affected part(s) rigid in flexion or extension |
