Patellar tendon rupture

Patellar tendon rupture is a rupture of the tendon that connects the patella to the tibia. The tell-tale sign of a ruptured patella tendon is the movement of the patella further up the quadriceps.

When rupture occurs, the patella loses support from the tibia and moves toward the hip when the quadriceps muscle contracts, hindering the leg's ability to extend. This means that those affected cannot stand, as their knee buckles and gives way when they attempt to do so.

Other symptoms of a patellar tendon rupture include sudden, sharp pain in the knee, swelling, and difficulty straightening the leg. Treatment options for a patellar tendon rupture include surgery to repair the tendon.