4. Helps your knees to bend is a function of the ligaments.
An injury to the knees can cause pain to the entire leg. For instance, a pedestrian that is hit by a car and when he or she makes an impact to the ground it is likely that their leg will fly up in the air.
The ligament that is protecting the knee becomes injured. If the injury is minor, icing and elevating the leg can help, but in serious cases, the joint has to be put back into place, which is painful. If that doesn’t work, surgery is needed to fix the bone in the knee.
The knee won’t be the same because any force applied to the knee will cause pain. Some people who have been physically active for years, have knee surgery and are able to go back to running after eight weeks. No matter what, they still need to take it slow because they can reinjure the knee.