embodiments of a method for introducing a substance near a fracture of a bone include installing an osteosynthesis nail into a canal of the bone , the osteosynthesis nail including a fixation aperture , coupling an alignment device with the osteosynthesis nail , the alignment device including an alignment sleeve having a longitudinal axis passing through the fixation aperture , drilling a hole through a wall of the bone and into the canal using the alignment sleeve , inserting an injector through the alignment sleeve , the injector having an injector body with an injection nozzle and a plunger , and moving the plunger to push the substance from within the injector body through the injection nozzle and into the canal .