Author: William A. Rossi, DPM Published: Podiatry Management, March 1999 (Perspectives column)
Note: This is an original summary, not the full article. The complete text and all figures remain copyright of Podiatry Management.
_____________________________
In his influential 1999 Podiatry Management piece, Dr. William A. Rossi asserts that standard shoes permanently alter the way humans walk, making authentic movement impossible while wearing modern footwear. He stresses a crucial distinction between two commonly confused terms: "normal" simply describes the statistical average of a population wearing shoes, whereas "natural" refers to the uninhibited, evolutionary function of the barefoot. While therapy can help restore a compromised stride to a population average, true evolutionary mechanics cannot occur inside standard shoe construction.
Dr. Rossi outlines several structural shoe features that disrupt natural human gait:
-
Heel Elevation: Raising the heel shifts the body’s center of gravity forward, forcing compensation up the entire kinetic chain—from the ankle and knee to the pelvis, spine, and posture. Over time, elevated heels overload the forefoot and shorten both the Achilles tendon and calf musculature.
-
Altered Strike & Weight Transfer: Hard shoe heels force initial ground contact onto the outer rear edge of the heel rather than the central base of the calcaneus, corrupting the smooth rolling transition from heel to toe.
-
Toe Spring: Upward curve at the front of a shoe keeps the toes permanently lifted off the ground, deactivating their natural capacity to splay, grip, and propel the body forward.
-
Asymmetrical Last Design: Shoe lasts often feature an inward curve that misaligns with the foot's natural straight axis. Additionally, hollows under the ball of the foot cause middle metatarsal heads to drop, causing artificial arch collapse.
-
Rigidity, Mass, and Constriction: Stiff soles prevent the natural 54-degree bend at the ball of the foot. Heavy footwear increases the energy required to lift each step, while narrow toe boxes restrict the foot from spreading naturally under load.
-
Reduced Contact & Sensory Deprivation: Encasing the foot eliminates over half of its natural ground-contact surface area. Thick, rigid soles mute tactile feedback from dense plantar nerve endings, impairing balance and spatial awareness.
He concludes that corrective orthotics inserted into flawed shoes cannot re-establish true biomechanical health—you cannot place a sound system on a broken foundation. The only path toward genuine human movement is spending time barefoot or wearing completely flat, unrestrictive, highly flexible footwear.