Medically reviewed by Amy Kwan, PT Key Takeaways Patellar tendonitis happens when the tendon becomes inflamed and irritated.

Does it seem like the number of people you know who have sustained knee injuries has increased recently? That's likely ...

Bob and Brad discuss how to tell if your knee pain is bursitis, including suprapatellar, prepatellar, infrapatellar, and pes ...

Knee strains involve a tendon or muscle tear around the knee. Symptoms can include cramping, spasms, swelling, and bruising. A knee strain can happen due to twisting, overuse of the muscle, or an ...

Wall sits strengthen your quadriceps, knee caps, and quadricep tendons. Doing hamstring curls boosts knee strength and lowers stress and injury risk. Clam shells target your gluteus medius and minimus ...

Though categorically not bad for your knees, running can be the cause of certain knee pain or injuries. One of the more common ones is patellar tendinopathy, which presents as pain just below the knee ...

The knee is one of the most important joints. It enables you to walk, squat, and climb steps. A knee sprain can seriously affect your quality of life by making these everyday movements difficult and ...

Knee conditions or injuries can cause pain in different parts of the knee. The location of pain can help determine which knee condition a person has. People may have pain above, below, behind, or at ...

Many people’s knees squeak, crack, or crackle, a phenomenon known as crepitus. Most of the time, it’s no big deal at all. But a loud popping sound accompanied by pain and swelling indicates an injury.

Common causes of pain above your knee include quadricep or hamstring tendonitis, arthritis, and knee bursitis. Your knee is the largest joint in your body, formed where your femur and tibia meet.

A hyperextended knee — or knee hyperextension — develops when the knee joint bends the wrong way and can damage the ligaments in the knee. The condition is common in athletes who play high-impact ...

Merete Juhl Koenig, The Parker Institute, Frederiksberg Hospital, Nordre Fasanvej 57, DK-2000 Frederiksberg, Denmark; merete.koenig{at}frh.regionh.dk Background Anterior knee tendon problems are ...