Table 1

Modified Ashworth Scale – (MAS) [18]

Grade
Description

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 the range of motion (ROM) when the affected part(s) is moved in flexion or extension.
1+
Slight increase in muscle tone, manifested by a catch, followed by minimal resistance throughout the remainder (less than half) of the ROM.
2
More marked increase in muscle tone through most of the ROM, but affected part(s) easily moved.
3
Considerable increase in muscle tone, passive movement difficult.
4
Affected part(s) rigid in flexion or extension.

Tsao and Mirbagheri Journal of NeuroEngineering and Rehabilitation 2007 4:45   doi:10.1186/1743-0003-4-45