Final answer:
The statement 'Osteoarthritis results from an autoimmune disorder' is false. Osteoarthritis is due to mechanical stress and breakdown of joint cartilage and bone, not the immune system attacking the body's tissues like in autoimmune diseases such as rheumatoid arthritis.
Step-by-step explanation:
Osteoarthritis (OA) is a joint disorder primarily caused by mechanical stress and breakdown of joint cartilage and bone, rather than an autoimmune disorder. Therefore, the statement 'Osteoarthritis results from an autoimmune disorder' is false.
OA is characterized by symptoms such as joint pain, stiffness, and sometimes swelling and decreased range of motion. It commonly affects joints like fingers, thumbs, neck, lower back, hips, and knees. In contrast, autoimmune diseases like rheumatoid arthritis and lupus involve the body's immune system mistakenly attacking healthy tissues, leading to joint damage. Unlike OA, rheumatoid arthritis results in immune cells invading the joints and causing cartilage breakdown and inflammation.
While both OA and some forms of arthritis have associations with inflammation, OA does not arise from an overactive immune system targeting the body's own tissues. It is instead a consequence of joint wear and tear over time.