Implant (I) temporary replacement separator of a knee prosthesis, this implant (I) presenting a femoral condyle (1) and a tibial plateau (2), resting the lower face (7) of the femoral condyle (1) on the face upper (8) of the tibial plateau (2), the lower face (7) of the femoral condyle (1) being convex while the upper face (8) of the tibial plateau (2) is concave, penetrating a pin (9) carried by the tibial plateau (2) in reception means (17) provided in the femoral condyle (1), the femoral condyle (1) presenting two wings (12, 13) of different sizes and curved away from the tibial plateau (2), the two wings (12, 13) being joined by a base (7) whose lower part forms the lower face of the femoral condyle (1), characterized in that the base (7) is crossed by a throat (17) extending in the longitudinal direction of the femoral condyle (1), said throat (17) forming the reception means previst os in the femoral condyle (1), the shortest wing (13) being constituted by two elements (15) called condyles, arranged at a distance from each other being separated by the extension of the throat (17), gathering a bar of stabilization (16) the two condyles (15) at the free end of said wing (13).Implante (I) separador de sustitución temporal de una prótesis de rodilla, presentando este implante (I) un cóndilo femoral (1) y una meseta tibial (2), descansando la cara inferior (7) del cóndilo femoral (1) sobre la cara superior (8) de la meseta tibial (2), siendo la cara inferior (7) del cóndilo femoral (1) de forma convexa mientras que la cara superior (8) de la meseta tibial (2) es de forma cóncava, penetrando un pasador (9) llevado por la meseta tibial (2) en unos medios de recepción (17) previstos en el cóndilo femoral (1), presentando el cóndilo femoral (1) dos alas (12, 13) de tamaños diferentes y curvadas alejadas de la meseta tibial (2), estando las dos alas (12, 13) reunidas por una base (7) cuya parte inferior forma la cara inferior del cóndilo femoral (1), caracterizado por q
