EFFECTS OF SIMULATING FOREFOOT VARISM INCREASES ON LOWER EXTREMITY KINEMATICS DURING THE STANCE PHASE OF WALKING

  • Rafael Z. Pinto
  • Thales R. Souza
  • Renato G. Trede
  • Nadja C. Pereira
  • Renata N. Kirkwood
  • Sérgio T. Fonseca
Keywords: gait, forefoot, varism, kinematics, simulating, stance phase

Abstract

This study investigates the effects of simulating forefoot varism increases on lower extremity kinematics during the stance phase. Sixteen volunteers walked on a walkway in three conditions: wearing flat sandals; wearing a 5º and a 10º laterally wedged sandal. Data were obtained with a 3-D motion analysis system. The variables analyzed were: subtalar eversion/inversion; shank internal/external rotation; knee internal/external rotation; hip internal/external rotation. The simulations of 5º and 10º increases in forefoot varism increased subtalar pronation (P≤.007) and the simulation of 10º increased internal rotation of the shank in relation to the pelvis and of the hip (P=.001). The results suggest that forefoot varism can lead to kinematic patterns related to the occurrence of overuse injuries.
Published
2007-12-12