Plates include both oceanic crust and continental crust. Stable subduction zones involve the oceanic lithosphere of one plate sliding beneath the continental or oceanic lithosphere of another plate due to the higher density of the oceanic lithosphere. That is, the subducted lithosphere is always oceanic while the overriding lithosphere may or may not be oceanic.
The primary causes of arthritis include viruses, bacterial infections, injuries, autoimmune disorders, and old age. There are over one hundred different types of arthritis, and each of these types can occur as a result of a different cause.Arthritis can affect large joints and small joints.The pain might remain located to one joint, or multiple areas of the body can develop symptoms.here are over one hundred different types of arthritis, and each of these types can occur as a result of a different cause. Arthritis can affect large joints and small joints. The pain might remain located to one joint, or multiple areas of the body can develop symptoms.
A joint is where two bones meet to allow movement of body parts. Arthritis means joint inflammation. The joint inflammation of rheumatoid arthritis causes swelling, pain, stiffness, and redness in the joints. The inflammation of rheumatoid disease can also occur in tissues around the joints, such as the tendons, ligaments, and muscles. In some people with rheumatoid arthritis, chronic inflammation leads to the destruction of the cartilage, bone, and ligaments, causing deformity of the joints. Damage to the joints can occur early in the disease and be progressive.