![]() This rinses the wound at the same time.įor example, for a screw of 3.5 mm diameter use a drill of 3.5 mm diameter.ĭrill bits can be used to both steel and titanium implants. We recommend cooling drills with a disinfectant solution. In such a screw extraction, it is very important to drape the wound, to prevent chips from entering the patient‘s body. Drills are selected so as to allow the screw head to be drilled off the screw shank. If the screw cannot be removed from the plate either as usual or using one of the above methods, you can use a drill to drill the screw off. If there is a screw rotation, you can use a screw extractor to help the screw with light pulling. For the respective size of hexagon you must use a special extractor with appropriate marking. Extractor is screwed into the damaged hexagon by turning to the left and by continuing anticlockwise movement the screw is extracted. First use an excavator to clean the inner hexagon. In all cases, if a sufficient rest of the bone screw is available, you can use screw extraction forceps for extraction.įor extraction of bone screws with damaged inner hexagon in the screw head, you can use a special extractor. For example, to extract a broken cortical screw HA 3.5, use the cutter, cylindrical cutter and extractor labeled 3.5. It is necessary to use instruments – cutters, cylindrical cutters and extractor – with the same marking for the respective bone screw. ![]() After fixing the broken screw in the extractor body, continue the counterclockwise movement of the extractor until the broken screw is unscrewed. After you take the cylindrical cutter out, screw the extractor with left inner tapered thread on the broken screw by pushing lightly and moving counterclockwise. Use this cutter to mill over the proximal cortex to about 8 mm above the rest of the broken screw. Then use the cutter and insert it into the prepared hole. Cutter is equipped with a guide pin, which serves as a cutter stopper. ![]() Prepare the access to rest of the broken nail using a cylindrical cutter.
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