What is osteoarthritis pathophysiology?
The pathogenesis of OA involves a degradation of cartilage and remodelling of bone due to an active response of chondrocytes in the articular cartilage and the inflammatory cells in the surrounding tissues.
What are the 4 stages of osteoarthritis?
The main stages of OA are:
- Stage 0 (pre-osteoarthritis)
- Stage 1 (early or doubtful)
- Stage 2 (mild or minimal)
- Stage 3 (moderate)
- Stage 4 (severe)
What is the last stage of osteoarthritis?
End-stage arthritis is the progressive wearing down of the cartilage that is present between the bones of a joint causing the bones to come in contact with each other and painfully rub against each other during movement of the joint. This results in severe pain with loss of movement and function.
What is the difference between osteoarthritis and arthritis?
The main difference between osteoarthritis and rheumatoid arthritis is the cause behind the joint symptoms. Osteoarthritis is caused by mechanical wear and tear on joints. Rheumatoid arthritis is an autoimmune disease in which the body’s own immune system attacks the body’s joints. It may begin any time in life.
What is the latest treatment for osteoarthritis?
Despite this, no therapies have been able to halt or delay OA progression satisfactorily or provided effective and long-lasting symptomatic relief. Currently, joint replacement with an artificial prosthesis is the most effective measure to improve pain sensation and quality of life in patients.
What are the most common complication of osteoarthritis?
Possible complications of osteoarthritis include: Rapid, complete breakdown of cartilage resulting in loose tissue material in the joint (chondrolysis). Bone death (osteonecrosis). Stress fractures (hairline crack in the bone that develops gradually in response to repeated injury or stress).
What is the primary defect in osteoarthritis?
Primary osteoarthritis is caused by the breakdown of cartilage, a rubbery material that eases the friction in your joints. It can happen in any joint but usually affects your fingers, thumbs, spine, hips, knees, or big toes. Osteoarthritis is more common in older people.
What is the pathophysiology of osteoarthritis (OA)?
The expression of a chondroitin-sulfate epitope (epitope 846) in OA cartilage, that is otherwise only present in fetal and neonatal cartilage, provides further evidence that OA is a distinct pathologic process. A final but important distinction is that degradative enzyme activity is increased in OA, but not in normal aging cartilage.
How does osteoarthritis affect the body?
This entire process of the wearing away of cartilage and bone-on-bone friction leads to a vicious and painful cycle we call osteoarthritis. Besides pain, osteoarthritis sufferers will also have joint stiffness and crepitus, which is the grinding noise and sensation people experience when joints move against one another.
How is osteoarthritis diagnosed?
Besides pain, osteoarthritis sufferers will also have crepitus, which is the grinding noise and sensation people experience when joints move against one another. Besides looking for signs such as crepitus, this condition is also diagnosed is by taking imaging studies such as an X-ray.
What is the role of cytokines in osteoarthritis (OA)?
In summary, MMPs and pro-inflammatory cytokines (e.g., IL-1) appear to be important mediators of cartilage destruction in OA. Synthesis and secretion of growth factors and of inhibitors of MMPs and cytokines are apparently inadequate to counteract these degradative forces.