The invention relates to instruments for reinforcing a human spinal column, in particular in the region of the last vertebral body S1 of the sacrum toward the head and of the lowermost lumbar vertebral body L5 or additionally of the second lowest lumbar vertebral body L4, comprising a tissue protection cover to keep open a position on the sacrum, a tool for removing bone tissue from the vertebral body S1 in the case of single level supply and from the vertebral bodies S1 and L5 in the case of double level supply, at least one tool for removing intervertebral disc tissue between S1 and L5 and a reinforcement screw consisting of a pin with a first, leading, proximal threaded pin portion and a second, driving, distal threaded pin portion.
