Osteoarthritis
Symptoms of osteoarthritis
Osteoarthritis can affect any joint in your body but it usually affects large moveable joints such as your hips, knees and lower back. It can also affect your hands, particularly the base of your thumb and the end joints of your fingers, and your feet.
In healthy joints, cartilage (a shiny gristly material) acts as a shock absorber and provides a smooth surface between the bones to allow easy movement. When a joint develops osteoarthritis, the cartilage breaks down causing pain, swelling and problems moving the joint.
Osteoarthritis progresses slowly and develops over many years. This most common symptoms of osteoarthritis are:
- joint pain and stiffness
- problems moving the joint.
You may also have the following symptoms:
- swelling in or near the joint
- muscle weakness
- a creaking or cracking sound when moving the joint.
Causes of osteoarthritis
We do not know exactly what causes osteoarthritis, but several things are thought to increase your risk of developing it. This includes if you:
- are overweight
- overuse your joint when it has not had enough time to heal after an injury or operation
- have a family history of osteoarthritis
- have other joint conditions such as rheumatoid arthritis, gout, or septic arthritis.
Diagnosing osteoarthritis
Your healthcare provider will ask you about your symptoms and may examine you. They will usually want to check what range of movement you have in your joints.
There are no specific blood tests for osteoarthritis. Your healthcare provider will normally diagnose it based on your symptoms and their examination.
An x-ray is not needed to diagnose osteoarthritis.
If your healthcare provider suspects you might have a different condition, such as a form of rheumatoid arthritis, you may need to have some extra tests. They will arrange any extra tests that you need.
Clinical review
This content was written by HealthInfo clinical advisers. It has been adapted for Health Information and Services.
Related websites
Arthritis NZ external link
Support groups, workshops, and information about arthritis