the.com/calcaneus
the largest bone in your foot, quietly absorbing every step you'll ever take.
impact kingabsorbs forces several times your body weight when running
jumper hazardfractures often called the lover's fracture from falls
achilles anchorthe Achilles tendon attaches directly to its back
baby invisiblebarely visible on infant X-rays, hardens with age
first contactthe heel bone that hits ground first each stride