Osteoarthritis, also called degenerative joint disease is the most common form of arthritis. It occurs most often in older people. This disease affects the tissue covering the ends of bones in a joint (cartilage).In a person with osteoarthritis, the cartilage becomes damaged and worn out causing pain, swelling, stiffness and restricted movement in the affected joint.
Doctors diagnose arthritis with a medical history, physical exam and x-rays of theknee. There is no blood test for osteoarthritis.
Causes and risk factors
Osteoarthritis is caused by the wearing out of the cartilage covering the bone ends in a joint. This may be due to excessive strain over prolonged periods of time, or due to other joint diseases, injury or deformity. Primary osteoarthritis is commonly associated with ageing and general degeneration of joints.
Secondary osteoarthritis is generally the consequence of another disease or condition, such as repeated trauma or surgery to the affected joint, or abnormal joint structures from birth.
Predisposing factors to osteoarthritis of knee
Abnormalities of Knee joint function resulting from fractures of the Knee, torn cartilage and torn ligaments can lead to degeneration many years after the injury. The mechanical abnormality leads to excessive wear and tear.
Management of Osteoarthritis
There are several treatments and lifestyle modifications that can help you ease your pain and symptoms.
- Medications: Pain-relieving medications such as NSAIDs, COX-2 inhibitors and opioids may be prescribed. Topical medications such as ointments can be applied over the skin where there is pain. If the pain is very severe, corticosteroid injection can be given directly into the knee joint to ease the pain.
- Other Treatments: Your physiotherapist will teach you exercises to keep joints flexible and improve muscle strength. Heat/cold therapy which involves applying heat or cold packs to the joints provides temporary pain relief. Lifestyle modifications can be done to control weight and avoid extra stress on the weight-bearing joints.
- Surgery:Knee Joint replacement surgery is considered as an option when the pain is so severe that it affects your ability to carry out normal activities.