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Circular arc nailing for stable fixation of hindfoot fusions

Abstract

In stance, the human body’s centre of gravity is retained perpendicularly within the contact area of the feet with the ground. This surface forms a so-called “supporting polygon”. Compared to other species within the mammals, due to bipedalism, this polygon is very small. The smaller the polygon, the more critical is the equilibrium in statics, walking and running. It thus appears evident that the osteo-articular axes of the foot must respond to a very precise alignment in relation to the centre of gravity of the body to not falling out of equilibrium. Stability of stance is active, by means that multiple bones and adaptive joints are powered by 10 extrinsic muscles which adapt constantly a precarious mechanical construct.

Kaj Klaue

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