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Modified Ashworth scale

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Modified Ashworth scale
Purposemeasure of spasticity

The Modified Ashworth scale (MAS) measures resistance during passive soft-tissue stretching and is used as a simple measure of spasticity.[1] Scoring (taken from Bohannon and Smith, 1987):

  • 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 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

References

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  1. ^ Ansari, NN; Naghdi, S; Arab, TK; Jalaie, S (2008). "The interrater and intrarater reliability of the Modified Ashworth Scale in the assessment of muscle spasticity: limb and muscle group effect". NeuroRehabilitation. 23 (3): 231–7. doi:10.3233/NRE-2008-23304. PMID 18560139.
2 Bohannon RW and Smith MB; 1987:Physical Therapy, 67(2), 206–207