¡@Degenerative arthritis often occurs in the joint of the lower limbs such as hip joints (articulation coax) and knee joints. When aging, joints would have cartilage surface breakdown because of long-term usage and lack of lubrication and resistance of soft bone tissues. Those cause pains and spurs in the cartilages. Then articular capsule emerges narrow malformation and breakdown of joint surfaces so as to cause pain and stiffness.
