Runner's knee is the common term used to describe any one of several conditions that cause pain around the kneecap or patella. These conditions include: anterior knee pain syndrome, patellofemoral malalignment, chondromalacia patella, and iliotibial band syndrome.
The cartilage under the kneecap is a natural shock absorber. Chondromalacia patellae may develop when the knee is overused or injured.
Treatable by a medical professional
Requires a medical diagnosis
Lab tests or imaging often required
Medium-term: resolves within months
It's usually treated with rest, pain relievers and physiotherapy.