We used a 4.8 drill and the med student did the drilling and insertion.It was hard to tell if the med student drilled bi-cortically as this may have been the cause of breakage.During insertion of the 6.0x25mm half pin, the ao tip of the half pin broke off in the blue t handle.We cut the half pin with the pin cutter and used the half pin removal tool to try to advance the pin bi-cortical.There was a large amount of torque possibly due to distal tibial callus formation from either patient anatomy or previous fracture/fractures (in general the bone was very thick and difficult to advance half pins).As we struggled to advance, the pin snapped at the thread to shank junction.We had to use a screw removal set to remove the tip of the half pin from bone.
|