A bone screw comprises an interior channel and at least one opening extending from the interior channel to an exterior of the screw shaft. A head is connected to the screw shaft. A fluid delivery probe comprises an interior channel. The fluid delivery probe is locked to the head so that the fluid delivery probe does not separate from the head under extremely high pressures when a fluid is pumped through the fluid delivery probe and into the screw shaft. Also, a leak-free seal is formed between the fluid delivery probe and the screw shaft so that the leak-free seal does not leak under extremely high pressures when a fluid is pumped through the fluid delivery probe and into the screw shaft.
