An operation assistance system includes a support column as well as at least a first and second robotic arm. A lower end section of the support column is pivotally mounted about a first pivotal axis (SA1) on a base unit and controlled by a first drive unit. A first end section of the first robotic arm is pivotally mounted about a second pivotal axis (SA2) on the upper end section of the support column opposite to the base unit and controlled by a second drive unit. A first end section of the second robotic arm is pivotally mounted about a third pivotal axis (SA3) on a second end section of the first robotic arm by a third drive unit. Each drive unit is associated with a controllable magnetic brake unit by which the robotic kinematics can be uncoupled from the drive units.