Patellar Tendon Injuries

A patellar tendon tear is an injury where the tendon is partially or completely torn, usually near its attachment to the kneecap. A complete tear disconnects the knee from the lower leg muscles, making it difficult or impossible to straighten the leg.

Symptoms include sudden pain in the front of the knee, swelling, and difficulty walking. In a complete tear, patients may be unable to straighten the knee or bear weight. A visible gap may be felt below the kneecap.

Tears often occur during sudden, forceful movements like landing from a jump or stumbling. They’re more common in athletes, people with chronic tendonitis, or those who’ve had prior knee surgery. Certain medications or medical conditions may also weaken the tendon.

Diagnosis starts with a physical exam to assess knee extension and detect a tendon gap. X-rays may show a high-riding kneecap, while an MRI confirms the tear and determines its extent.

Partial tears may be treated with bracing and physical therapy. Complete tears usually require surgery to restore normal knee function, especially in active individuals or those with significant weakness or loss of motion.