A prosthetic foot, having a forefoot member and a heel member, is comprised of two separate members forming opposite halves of the foot generally about the longitudinal axis of the foot for simulating natural rotation of the toes of a real foot. The forefoot member of the foot forms a resilient arc extending...http://www.google.co.uk/patents/US5944760?utm_source=gb-gplus-sharePatent US5944760 - Prosthetic foot with reinforcing member
