Fig. 3From: Systematic review of candidate prognostic factors for falling in older adults identified from motion analysis of challenging walking tasksFoot clearance definitions from different studies. Some studies reported overall foot clearance, while others reported heel clearance and/or toe clearance. These clearances were reported as a vertical distance or as a horizontal distance between participant and stair or obstacle while the foot is in the air. Furthermore, clearance of the leading leg and the trailing leg were reported. V, vertical; H, horizontalBack to article page