Set of mobile necks for inserting into the stem of a hip...

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/36 (2006.01) A61F 2/00 (2006.01) A61F 2/02 (2006.01)

Patent

CA 2515363

A description is given of a set of mobile necks for inserting into the stem (2) of a hip prosthesis, in which the said mobile necks are produced with different inclinations and lengths in such a way that their free ends (3i), when inserted in the said stem, terminate at nine mutually equidistant points (Pi) arranged in three parallel horizontal rows (R0) in such a way that the lines joining the outermost points delineate a square (Q), the length of whose sides is approximately 15 mm, the diagonal (D) of this square coinciding with the axis (H-H) of a mobile neck (1) set at a neutral inclination, that. is neither varus nor valgus, with respect to a plane (.szlig.) essentially perpendicular to the axis of the abovementioned stem (2).

La présente invention se rapporte à un ensemble de cols amovibles à introduire dans la tige (2) d'une prothèse de la hanche, lesdits cols amovibles étant réalisés selon différentes inclinaisons et avec différentes longueurs de sorte que, une fois introduites dans la tige, leurs extrémités libres (3i) aboutissent en neuf points (P¿i?) situés à distance égale les uns des autres et disposés selon trois rangées horizontales parallèles (R¿o?) de telle manière que les lignes reliant les points situés le plus à l'extérieur délimitent un carré (Q), la longueur des arêtes du carré étant égale à environ 15 mm, et la diagonale (D) dudit carré étant confondue avec l'axe (H-H) d'un col amovible (1) dont l'inclinaison est neutre, à savoir ni varus ni valgus, par rapport à un plan (.szlig.) essentiellement perpendiculaire à l'axe de la tige précitée (2).

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