Kinesiology 2241A/B Lecture Notes - Lecture 15: Plantar Fascia, Orthotics, Pelvis

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2241A/B
• Professor: Thomas Richard Jenkyn

Document Summary

Foot made up of several bones that each articulate w/ one another. Arches maintained by ligaments + muscular activity (intrinsic foot muscles that flex and help arches) Arches flex when running and take load from bone and ligament and muscle. Energy goes back to bones and pushes forward. Height of medial longitudinal arch is controlled by internal + external rotation of lower leg. Leg external rotation, arch rises, foot becomes rigid. Need foot to be flexible to conform to surface. This rotation locks to arches (2nd pt of stance phase = foot is rigid) Rigid lever allows for rigid lever to push off (flexible to rigid) Loading goes from bones to ligaments + plantar fascia. Only get contact at very front or back. Regardless of arches when standing quietly all 5 toes should be on the ground. Two legs should be symmetrical, lower legs vertical + pelvis horizontal.