The application of both scales would suggest that confusion exists on their characteristics and limitations as measures of spasticity. Resistance to passive movement is a complex measure that will be influenced by many factors, only one of which could be spasticity. The Ashworth Scale (AS) can be used as an ordinal level measure of resistance to passive movement, but not spasticity. The modified Ashworth Scale (MAS) will need to be treated as a nominal level measure of resistance to passive movement until the ambiguity between the '1' and '1+' grades is resolved. The reliability of the scales is better in the upper limb. The AS may be more reliable than the MAS. There is a need to standardize methods to apply these scales in clinical practice and research.

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on behalf of the BoTULS InvestigatorsBackground and Purpose-Botulinum toxin is increasingly used to treat upper limb spasticity due to stroke, but its impact on arm function is unclear. We evaluated botulinum toxin for upper limb spasticity and function poststroke. Methods-Three hundred thirty-three patients with stroke with upper limb spasticity and reduced arm function participated in a multicenter randomized controlled trial. The intervention group received botulinum toxin type A injection(s) plus a 4-week therapy program. The control group received the therapy program alone. Repeat injection(s) and therapy were available at 3, 6, and 9 months.

The modified Ashworth Scale does not provide a valid measure of spasticity at lower grades but it may provide a measure of resistance to passive movement.

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The objective of this article is to establish the prevalence of spasticity in a random selection of people with multiple sclerosis (MS) in the city of Newcastle upon Tyne in the Northeast of England. A secondary aim was to assess the adequacy of current pharmacological intervention for spasticity and assess the relationship between spasticity and overall disability. The study design was a simple comparison that examined differences in functional independence in 2 random groups of people with MS subdivided by the presence of clinically significant spasticity. A total of 68 adults with a diagnosis of clinically definite MS were included in the study. Their level of functional independence was assessed using the Newcastle Independence Assessment Form (NIAF), the Functional Independence Measure (FIM), and the Kurtzke Extended Disability Status Scale (EDSS). Spasticity was assessed using the Modified Ashworth Scale. A subjective analysis was made of the appropriateness of oral antispastic medication by a rehabilitation physician. Thirty-two people (47%) had clinically significant spasticity (Modified Ashworth Score of 2, 3, or 4). Seventy-eight percent of the population were receiving some oral antispastic medication, but 50% were deemed to require some drug adjustment or additional treatment. Individuals with spasticity were found to have significantly higher levels of disability than those who had no spasticity or clinically insignificant spasticity. This study has confirmed that spasticity is highly prevalent in the MS population and is significantly associated with a reduced level of functional independence. Treatment of spasticity is suboptimal in a large proportion of the population, and the need for further information and education to health professionals and to people with MS is highlighted.

Sativex is one of the first cannabis-based medicines to undergo conventional clinical development and to be approved as a prescription medicine. It is an oromucosal spray that allows flexible, individualised dosing. Patients self titrate their overall dose and pattern of dosing according to their response to and tolerance of the medicine. This usually results in the administration of approximately 8-12 sprays/day. Each spray delivers tetrahydrocannabinol 2.7 mg and cannabidiol 2.5 mg, giving an approximate average dose of tetrahydrocannabinol 22-32 mg/day and cannabidiol 20-30 mg/day. Development has concentrated on the treatment of symptoms of multiple sclerosis, notably spasticity and neuropathic pain, as well as the treatment of neuropathic pain of other aetiologies. Positive results in placebo-controlled trials of the use of Sativex as an add-on therapy in these indications demonstrate that Sativex is efficacious and well tolerated in the treatment of these symptoms. Sativex has been approved for use in neuropathic pain due to multiple sclerosis in Canada. If ongoing studies replicate the results already observed, further approvals for the treatment of spasticity in multiple sclerosis and for neuropathic pain are likely.