The present invention provides an expandable intervertebral implant that is selectively disposed in the intervertebral space and deployed, thereby in-situ distracting, realigning, and/or stabilizing or fusing a portion of the spine of a patient in the treatment of injury, disease, and/or degenerative condition. The expandable intervertebral implant includes a superior member and an inferior member, each of which has a partially or substantially wedge or prismatic shape and a partially or substantially convex or other-shaped surface that is suitable for engaging the substantially concave surfaces of the associated bony superior and inferior intervertebral endplates. Once disposed in the intervertebral space, the expandable intervertebral implant is actuated and deployed, with the superior member and the inferior member moving apart from one another, seating against the associated intervertebral endplates, and distracting, realigning, and/or stabilizing them to a desired degree. The external surface of each of the superior member and the inferior member is provided with a plurality of ridges or other friction structures, providing purchase with the associated intervertebral endplates.La présente invention concerne un implant intervertébral expansible qui est sélectivement disposé dans l'espace intervertébral et déployé, pour distraction, réalignement et/ou stabilisation ou fusion d'une partie de la colonne vertébrale d'un patient in situ dans le traitement d'une lésion, une maladie, et/ou affection dégénérative. L'implant intervertébral expansible comprend un composant supérieur et un composant inférieur, dont chacun a partiellement ou sensiblement une forme de coin ou prismatique et un surface de forme partiellement ou sensiblement convexe ou d'une autre forme qui est adaptée pour engager les surfaces sensiblement concaves des plateaux intervertébraux osseux supérieur et inférieur associés. Une fois disposé dans l'espace intervertébral, l'implant intervertébral expan
