Interlocking Intramedullary (IM) nailing is a newer method used to align and stabilize canine fractures. Threaded bolts are placed through holes in the ends of nails to provide rotational stability not possible with IM pins alone. Nails are inserted into the central canal of long bones of the extremities (e.g. femur, humerus, tibia).
This system offers superior stability for highly comminuted (many pieces) long bone fractures as well as enabling the practice of biological repair (preserving fracture hematoma).