Proximal Locking, contd.

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measure for the proper length 4.9 mm Locking Bolt using depth gauge 3.   Remove the drill sleeve. Using the Depth Gauge for locking bolts, measure for the proper length 4.9 mm Locking Bolt. Add 2 mm to the measurement to ensure engagement of the far cortex.

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Note: If using a calibrated drill bit, stop the drill after drilling through the far cortex. If necessary, use the image intensifier to confirm the position of the drill bit. Press the drill and protection sleeves firmly against the bone and read the correct bolt length on the calibrated drill bit at the end of the 8.0 mm/4.5 mm Drill Sleeve (see inset). Remove the drill sleeve.

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