Mobility impairments are among the most common symptoms reported by individuals with
multiple sclerosis (MS),1 with prevalence rates ranging from about 50% to >90%.2 Fewer than 50% of people with MS walk unaided.3 Gait abnormalities are found in individuals with early MS4 and those minimally affected by the disease5; yet, people with MS can remain ambulatory for 10 to 20 years and more.6 Those with more disability (Expanded Disability Status Scale scores 3–5) are at moderate
risk of developing gait limitations in 10 years, with half requiring an assistive
device.6 Thus, measuring mobility is a common component of the examination of patients with
MS. The 12-Item MS Walking Scale7 (MSWS-12) is a self-report measure of the impact of MS on walking ability. Two versions
exist; this summary pertains to the original version. The MSWS-12 can be administered
in less than 10 minutes; each item is rated on a 1–5 point scale (1 = no limitation
and 5 = extreme limitation) and the score is transformed to a 0–100 point scale. Data
support its reliability, validity, and responsiveness.
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© 2013 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.
