Healthy joints are encapsulated in the synovial membrane, and are filled with water and synovial fluid. Cartilage rests on the end of the bones and acts as a shock absorber for the bones. When you run, the cartilage distributes the pressure to your entire leg and reduces the shock to your bones. Take a look at the below diseased joint to see what can happen to a healthy joint when it has osteoarthritis.
As a result of injury, glucosamine deficiency, age, or arthritis, joints can break down and look similar to this. First, the cartilage breaks down and begins to float in the synovial fluid. Bone spurs develop. The once smooth cartilage is now jagged and rough, if not missing. That is where all of the discomfort and stiffness comes from. Joints begin to "seize up" and flexibility decreases. Pain sets in and even walking can become a chore.
Joint pain is stiffness in a joint. Joint pain can affect one or more joints. Joint pain can be caused by many types of injuries or conditions. No matter what causes it, joint pain can be very bothersome.
Rheumatoid arthritis is an autoimmune disorder that causes stiffness and pain in the joints.
Osteoarthritis involves growth of bone spurs and degeneration of cartilage at a joint.
It is very common in adults older than 45 and can cause joint pain. Joint pain may also be caused by bursitis (inflammation of the bursae). The bursae are fluid-filled sacs that cushion and pad bony prominences, allowing muscles and tendons to move freely over the bone.
