Fig 6.

An aiming device is used to ream a tunnel in the left proximal patella for the reconstruction graft. A beath pin is drilled first in the desired position and a reamer is then used to create a tunnel. Before reaming the tunnel, it is important to confirm the position of the pin to minimize the risk of fracture, and patellar articular cartilage violation. The position can easily be confirmed by visualizing the entry and exit points of the pin relative to the patellar thickness. If in doubt, a mini C-arm can be used to confirm position.