Gait impairment represents one of the most common and disabling symptoms of multiple sclerosis (MS). To identify which temporal or spatial parameters of gait could be used as outcome measures in interventional studies of individuals with MS with different levels of disability, we evaluated characteristics of these parameters in a case study of 3 participants with MS, using 1 case as an exemplar and the other participants as validation. A case study of an exemplar participant was conducted with a 67-year-old woman with secondary progressive MS served as exemplar, with 2 other participants (52 and 55 years old) as validation. The primary outcome measures we used were stride time, stride length, gait velocity, and daily symptoms. Stride length and velocity of gait decreased with increasing pain and fatigue. The step time was significantly longer later in the day, whereas the step length remained the same. Stride length and velocity are associated with the level of fatigue and pain, as well as the time of day. These characteristics and parameters of gait need to be considered in future studies of gait in MS, with particular attention to temporality of occurrence in persons with MS.
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