base gaitThe lateral distance (measured in millimeters) between the midline of the footfall during a person’s normal gait, which is usually measured at the mid point of the heel (or less commonly at the centre of the ankle joint).
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
base gaitStride width, walking base Biomechanics The side to side distance–measured in millimeters–between the line of the 2 feet, usually
measured at the mid point of the heel, but sometimes the center of the ankle joint
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.