the invention relates to a device and method for controlling an artificial orthotic or prosthetic joint of a lower extremity , comprising a resistance unit with which at least one actuator is associated , via which the bending and / or stretching resistance is varied depending on sensor data . during the use of the joint , status information is provided via sensors . according to the invention , the resistance is increased in the standing phase or while standing from a starting value depending on the ground reaction force up to a locking point of the joint .