Tone Assessment

Question 1

This is described as an alternation between the agonist and antagonist muscles relaxing and contracting.

Answer 1

Clonus

Question 2

This is the most widely used assessment tool to measure resistance to limb movement in a clinical setting. However, it cannot distinguish between neural and non-neural components of increased tone.

Answer 2

Modified Ashworth Scale

Question 3

No increase in muscle tone

Answer 3

MAS Grade 0

Question 4

Slight increase in muscle tone manifested by a catch and release at end of ROM

Answer 4

MAS Grade 1

Question 5

Slight increase in muscle tone, manifested by a catch followed by minimal resistance

Answer 5

MAS Grade 1+

Question 6

More marked increase in tone through most of ROM but joint is easily moved

Answer 6

MAS Grade 2

Question 7

Considerable increase in muscle tone passive movement is difficult

Answer 7

MAS Grade 3

Question 8

Affected part is rigid in flexion or extension

Answer 8

MAS Grade 4