radiolucent aiming arm, method for locating holes for distal locking of an implanted intramedullary pin, and aiming device for determining the location and orientation of a transverse hole for an implanted intramedullary pin

摘要

"RADIOLUCENT MIRA ARM, METHOD FOR LOCKING HOLES FOR DISTAL LOCKING OF AN IMMEDULATED INTRAMEDULAR PIN, AND DEVICE TO DETERMINE THE LOCATION AND GUIDANCE OF A TRANSVERSAL HOLE OF AN IMMEDULATED PIN" New coplanar X-ray guided methods and device for insertion of distal locking screws into bony pins. The device has coplanar holes, which allow insertion of protective gloves. A drill and bone screws can be inserted through protective gloves. Radiopaque target markers on the aiming arm allow for easy placement of an X-ray source so that an X-ray beam is coplanar with the transverse holes of the aiming arm. After the X-ray source is precisely oriented, a single X-ray snapshot is sufficient to assess the exact distortion of the implanted intramedullary pin. The x-ray beam need not be coaxial with the intramedullary pin holes. The aiming arm has a movable part and a fixed part attached to the pin, whose aiming arm can be adjusted by moving the movable part over the fixed part to compensate for distortion of the intramedullary pin after implantation. Once the aiming arm is precisely positioned, the transverse holes of the aiming arm and the intramedullary pin holes are precisely aligned, protective gloves are inserted through the holes of the aiming arm and holes with bone drills are drilled through the holes. Intramedullary pin and surrounding the bone material Bone screws are inserted, locking the intramedullary pin into the bone.