Use of a Step Activity Monitor in Determining Outcomes

Step activity is a natural measure of mobility function that is well suited to questions of prosthetic and orthotic outcomes. Step count data are relatively easily comprehended and interpreted. The StepWatch ™ Activity Monitor (SAM) is an instrument that was developed to accurately measure the impact of various interventions on the real-world activity level of individuals. It counts and records the number of steps taken in short time intervals (typically 1 minute) for up to 2 months continuously. The patient or subject is not required to do anything but wear the monitor on the leg. Many independent studies have validated the high accuracy of the SAM in populations with greatly varying gait styles and abilities.