Fig. 1From: Flexible versus standard intramedullary rod in posterior stabilized primary total knee arthroplasty: protocol for a randomized controlled trialThe custom-made aiming device used to standardize the distal entry points of the two rods. The device has a small cylinder which is placed in the intercondylar notch, and two holes, all interspaced at 5 mm. The anterior and posterior holes are used to mark the entry point for the standard rod and flex rod, respectivelyBack to article page