OSTEOSYNTHETIC PLATE SHORTENS AND CHANGES SHAPE ON TEMPERATURE INCREASING FROM BELOW MARTENSITIC TO ABOVE AUSTENITIC TRANSFORMATION POINTS

摘要

Bone synthesis plate made of a thermoelastic martensitic alloy whose transformation temperatures are: - martensitic transformation temperature Ms lower than 10 DEG C; - austenitic transformation temperature As higher than 15 DEG C; the transition from the martensitic temperature to the austenitic temperature inducing a shortening in the length of the plate, characterised in that it is trained to be in a rectilinear shape (Fig. 1) at a temperature below the martensitic transformation temperature Ms of the material of which it is made, and in a wavy shape (Fig. 2) at a temperature above the austenitic transformation temperature As of the said material. IMAGE