What are the symptoms for a torn patella tendon?

Usually dramatic: This is typically a painful, traumatic and debilitating injury. Initial symptoms would be pain in the front of the knee, diffuse swelling around the knee, and difficulty straightening the knee without assistance. Often the leg feels powerless and as if you are dragging it, because the powerful quad muscle in your thigh is no longer connected to the lower leg (tibia). Seek medical attention.