It also twists and rotates. To do all of these things and support your body while doing so, the knee relies on several structures. They include bones, ligaments, tendons, and cartilage.

A tiny knee bone often found in people with a common type of arthritis may have helped humans evolve from walking on all fours to standing upright, scientists believe. Not much is known about the ...

A direct hit to the knee. Falling or bumping your knee can cause runner's knee. Your bones aren't aligned correctly (malalignment of the kneecap). If any of the bones from your hips to your ankles ...

People can injure their knees in various ways. Common types of knee injuries include sprains, strains, muscle tears, and bone fractures. The femur (thigh bone), tibia (shin bone), and patella ...

Medial meniscal tears are another common injury-related cause of knee pain. "The meniscus is a structure between the ends of the bones, and when it tears, it can cause catching and pain - much ...

The bone itself also contributes to the pain. With arthritis the knee bone changes, Dr. Carter said. Pores open in the bones that didn’t use to be there, and nerves from the bone grow into the ...