The knee is a hinge. It is a large, weight-bearing joint, but the motion of the knee is much more strictly limited than that of most other joints. Knees straighten to make the leg a stable support, and it will bend to more than a right angle – to approximately 120 degrees. However, it does not move in any other direction. The great strength of the knee is from it's limited motion, but it is not engineered to take stresses on the side.

The knee must be stable and it must be able to extend fully to a straight leg. If it cannot extend fully the muscles must support the body at all times and knee strain is continuous. Normally our knee locks when in the straight position and allows us to relax. Weak knees that wobble from side to side cause too much stress on the side ligaments, and the condition may gradually worsen.

Eczema comes in many forms, and may be mild to severe. It is far worse than just an annoying condition, and can become serious due to its resistance to many forms of treatment.  Its symptoms range from swelling and redness to painful blisters and itchy skin. Eczema treatment will generally be based on the type of inflammation as well as its severity.  Eczema may also go by the name of dermatitis.  It has been known to affect children as young as newborn.