AONA - Titanium Distal Femoral Nail System Technique Guide

Locking Distally

Distal locking is performed using the 6.0 mm Titanium Locking Screws [450.861-450.872].

Attach the Aiming Arm for 6.0 mm Titanium Locking Screws [357.096] to the Insertion Handle. Insert the triple trocar assembly* into the Aiming Arm and through a stab incision to the bone. Remove the trocar.

Attach the Aiming Arm

Insert the triple trocar through the Aiming Arm

Click on images for enlarged views

Drill through both cortices using the 5.0 mm Calibrated Drill Bit [357.099], stopping the drill immediately after penetrating the far cortex. Confirm drill bit position radiographically. Ensure the drill sleeve is pressed firmly to the cortex and read locking screw length directly from the calibrated drill bit at the back of the drill sleeve. The calibrated drill bit provides a direct measurement.

Drill with the 5.0 mm Calibrated Drill Bit.

Drill bit reading at the Protection Sleeve

Click on images for enlarged views Note:
Since drill bit position directly represents locking screw position in bone, the locking screw will be too long if the drill bit is over- inserted, or if the drill sleeve is not pressed down to the cortex.
* 11.0 mm/8.0 mm Protection Sleeve [357.76], 8.0 mm/5.0 mm Drill Sleeve [357.097] and 5.0 mm Trocar [357.098]

Continued

Index