ocr: Resident and Staff PhysicaM Patiant Education Chart Foot Angle Contribution to Running Injuries Foot Supination and Pronation while Running a- Impact - Supination at Pronation at Running on heel strike midstance uneven ground increases pronation. Reprinted with permission from Resident and: Staff Physician (c)1991-92, 1993 byl Romaine Pierson/Publishers, Inc.