Muscle Spasticity (Subscribe)  

Table I in this paper gives details of these scales. Note the paper concluded that the reliability of both these scales was low

Cerebral palsy is a group of disorders affecting the development of movement and posture that are believed to arise from nonprogressive disturbances in the developing fetal or infant brain. In addition to the motor disorders that characterize cerebral palsy, which limit a patient's activities, individuals with cerebral palsy often display...

Reliability of Ashworth and Modified Ashworth Scales in Children with Spastic Cerebral Palsy Akmer Mutlu , Ayse Livanelioglu and Mintaze Kerem Gunel BMC Musculoskeletal Disorders 2008, 9:44 Abstract and link to free full text
A prospective cross-sectional observational study was planned to determine the reliability of the Ashworth Scale (AS) and...

Spasticity (meaning to draw or tug) is involuntary, velocity-dependent, increased muscle tone that results in resistance to movement. The condition may occur secondary to a disorder or trauma, such as a spinal cord injury (SCI), a brain injury, a tumor, a stroke, multiple sclerosis (MS), or a peripheral nerve injury....