1999/09/01 by Ward M Glasoe, Ward M. Glasoe, H. John Yack +3 · 3 citations
Engineering · Medicine · #Lower Extremity Biomechanics and Pathologies #Foot and Ankle Surgery #Diabetic Foot Ulcer Assessment and Management
paper · pdf · doi:10.1093/ptj/79.9.854
he medial longitudinal arch serves as the chief load-bearing structure in the foot The first ray is a single foot segment consisting of the first metatarsal and first cuneiform bones. 5 Pronation of the subtalar joint lowers the first ray to the ground in early stance 5 and dissipates the shock of heel impact. As body weight moves forward, the mechanics of supination stabilize the medial arch, preparing the foot for the propulsive phase of gait. The dichotomous actions of weight acceptance and weight-bearing stability required of the first ray underscore the importance for clinicians who treat the foot to understand the biomechanics of the first ray.