Knee Conditions

The knee is the largest joint in the body. The knee is made up of the lower end of the thigh bone (femur), which rotates on the upper end of the shin bone (tibia) and the knee cap (patella), which slides in a groove on the end of the femur. The joint surfaces where these three bones touch are covered with articular cartilage, a smooth substance that cushions the bones and enables them to move easily. All remaining surfaces of the knee are covered by a thin, smooth tissue liner that releases a special fluid to lubricate the knee. This eliminates friction almost completely in a healthy knee. Normally all of these components work in harmony. But disease or injury can disrupt this harmony, resulting in pain, muscle weakness and increased friction.

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