Knee joint

Body stress in the knee may
cause the knee joint to be
weakened to the point of collapse

This joint undergoes a great deal of daily strain, as not only does it bear the weight of the body, it is designed for the flexibility of a hinge joint. The cartilage pad in the knee joint and the ligaments supporting the joint may be stressed by twisting the knee, by jarring it in a fall or in a hard kick.

When there is body stress in the knee, besides being painful, the knee joint may be weakened to the point of collapsing when pressure is exerted on the leg, as in going up or down stairs.