Final answer:
To address patellar impingement during flexion after knee revision surgery with a large poly in place, surgical adjustments may be needed to the femoral component, poly insert, or patellar component to restore proper knee mechanics.
Step-by-step explanation:
When managing a scenario involving impingement of the patella on the femoral component during flexion with a large poly in place during a revision knee surgery, several anatomical and procedural considerations are important. The patella serves a critical role in knee stability and movement, providing a protective surface for the quadriceps tendon, transferring force as part of the quadriceps femoris muscle group, and aiding in leg extension at the knee. If the joint line is elevated, causing patellar impingement, options to address the issue include adjusting the position or size of the femoral component, revisiting the polyethylene insert's thickness, or revising the patellar component to alleviate the impingement and restore a more natural knee joint biomechanics. Understanding the roles of the femoropatellar joint, quadriceps femoris muscle, patellar ligament, and associated collateral and cruciate ligaments is pivotal in making informed surgical decisions.