Prostheses for people with an amputation above the knee, said prosthesis having a femoral segment (1), which may be fixed to a femoral connection (100), and a tibial segment (3) pivotally connected to each other around a joint axis (2) that reproduces the movements of the knee, said segment of tibia (3) being articulated by an ankle (3a) to a foot (400b) having fingers (400a), a sole of the foot (400b) and a heel (400c), in which said knee movements comprise an oscillation phase, between lifting the toes (400a) from the ground and supporting the heel (400c), and a positioning phase, which comprises supporting the heel (400c), load the sole of the foot (400b) and lift the toes (400a) from the ground, with a hydraulic shock absorber (5) having respectively an upper hinge (5b) and a lower hinge (5a) connected respectively with said femoral segment (1) and said tibial segment (3) and which dampens the relative movement of said tibial segment (3) with respect to said femoral segment (1), so that in the positioning phase, the tibial segment (3) brakes with respect to the knee joint between said segment femoral (1) and said tibial segment (3), in which the hydraulic shock absorber (5) comprises a cylinder (5c) -piston (10) and a rod (9) connected to said piston (10) and a microprocessor to adjust the damping reaction of said shock absorber (5) characterized in that the shock absorber (5) is of the hydraulic type and comprises sheets (30a, 30b) arranged as check valve springs that generate openings for the oil outlet according to the speed of the rod (9) in the cylinder (5c), so that the oil outlet is controlled in the presence of high loads.Prótesis para personas con una amputación por encima de la rodilla, teniendo dicha prótesis un segmento femoral (1), que puede estar fijado a una conexión femoral (100), y un segmento tibial (3) conectados de manera pivotante entre sí en torno a un eje de articulación (2) que reproduce los movimientos de la rodilla, estando dicho segmen
