Importance

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Abstract

This prosthesis is made of a material which is mult-directionally flexible and elastic, and comprises an interspinous portion having a thickness slightly greater than the anatomical interspinous space when the spine is in lordosis. According to the invention, the prosthesis has two pairs of lugs projecting longitudinally on either side of its interspinous portion, these lugs having substantial heights in relation to the total height of the prosthesis, namely, for each pair of lugs, of the order of 30 to 45% of this total height; each pair of lugs is integral with the said interspinous portion and delimits a deep recess which is able to receive the corresponding spinous apophysis without play, with a wide surface area of contact between these lugs and this apophysis.

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First Claim