Modified Ashworth scale
Grade
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
affected part(s) is moved in flexion or extension
1+ Slight increase in muscle tone, manifested
by catch, followed by minimal resistance
throughout the remainder 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,
passive movement difficult
4 Affected part(s) rigid in flexion or extension
Grade
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
affected part(s) is moved in flexion or extension
1+ Slight increase in muscle tone, manifested
by catch, followed by minimal resistance
throughout the remainder 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,
passive movement difficult
4 Affected part(s) rigid in flexion or extension
