Knee pain when bending is a common problem. There are a number of different causation factors which can affect how the knee moves. The pain may start suddenly after an injury, or gradually come on over time.
Around the knee there are many structure including: muscles, bones, cartilage and ligaments. These structures all need to work together properly to allow for smooth, pain-free movement. Problems in any of these areas can lead to knee pain when bending. For example, if there is muscle weakness or ligament instability, the bones may move slightly out of position causing them to catch or grind on other structures in the knee.
Some of the most common causes of knee pain when bending include: Runners knee, bursitis, knee sprain, meniscus tear, arthritis, patella tendinitis, Iliotibial band syndrome and Osgoods Schlatters.
The best treatment will depend on the underlying cause of your knee pain when bending. Signs and symptoms need to be examined, as well as taking a detailed history of the present condition. A tailored exercise programme can then be developed to suit you.