Osteoarthritis, the "wear and tear" arthritis, is common, especially as we age. Causes include aging joints, previous injuries, and obesity, among others. Symptoms of osteoarthritis include joint pain and stiffness. Osteoarthritis may affect any joint, including the hand, wrist, neck, back, knee, and hip. Treatment depends on the joint but often includes medication and exercise. There is no special osteoarthritis diet, but weight loss may improve symptoms of osteoarthritis.
Causes, Incidence, and Risk factors
Osteoarthritis is caused by 'wear and tear' on a joint.
Cartilage is the firm, rubbery tissue that cushions your bones at the joints, and allows bones to glide over one another.
Cartilage can break down and wear away. As a result, the bones rub together, causing pain, swelling, and stiffness.
Bony spurs or extra bone may form around the joint, and the ligaments and muscles around the hip become weaker and stiffer.
the cause of OA is unknown. It is mainly related to aging. The symptoms
of OA usually appear in middle age. Almost everyone has some symptoms
by age 70. However, these symptoms may be minor. Before age 55, OA
occurs equally in men and women. After age 55, it is more common in
Other factors can also lead to OA.
OA tends to run in families
Being overweight increases the risk of OA in the hip, knee, ankle, and foot joints
Fractures or other joint injuries can lead to OA later in life
Long-term overuse at work or in sports can lead to OA
Medical conditions that can lead to OA include:
and stiffness in the joints are the most common symptoms. The pain is
often worse after exercise and when placing weight or pressure on the
Your joints become stiff and harder to move over time. You
may notice a rubbing, grating, or crackling sound when you move the
The phrase "morning stiffness" refers to the pain and
stiffness people feel when they first wake up in the morning. Stiffness
usually lasts for 30 minutes or less. It is improved by mild activity
that "warms up" the joint.
During the day, the pain may get worse
with activity and feel better when you are resting. After a while, the
pain may be present when you're resting. It may even wake you up at
Some people might not have symptoms, even though x-rays show the changes of OA.
Signs & Tests
A physical exam can show:
Joint movement may cause a cracking (grating) sound, called crepitation
Joint swelling (bones around the joints may feel larger than normal)
Limited range of motion
Tenderness when the joint is pressed
Normal movement is often painful
No blood tests are helpful in diagnosing OA.
x-ray of affected joints will show a loss of the joint space. In
advanced cases, there will be a wearing down of the ends of the bone and
OA cannot be cured. It will also most likely become worse over time. However, your OA symptoms can be controlled.
you can always have surgery, other therapies can improve your pain and
make your life much better. Although these treatments cannot make the
arthritis go away, they can often delay surgery.
Over-the-counter pain relievers, which you can buy without a prescription, can help with OA symptoms.
Most doctors recommend acetaminophen (Tylenol) first, because it has fewer side effects than other drugs.
your pain continues, your doctor may recommend nonsteroidal
anti-inflammatory drugs (NSAIDs). These drugs help relieve pain and
swelling. Types of NSAIDs include aspirin, ibuprofen, and naproxen.
Taking acetaminophen or another pain pill before exercising is okay. However, do not overdo the exercise because you have taken medicine.
you are taking pain relievers on most days, tell your doctor. You may
need to be watched for side effects, such as ulcers and bleeding. These
drugs may also increase the risk for heart attacks and strokes.
injected right into the joint can also be used to reduce swelling and
pain. However, relief only lasts for a limited time. More than two or
three injections a year may be harmful.
Many people use over-the-counter remedies such as glucosamine and chondroitin sulfate.
These supplements may help control pain, although they do not seem to help your joint grow new cartilage.
Some doctors recommend a trial period of 3 months to see whether glucosamine and chondroitin work.
(Zostrix) skin cream may help relieve pain. You may feel a warm,
stinging sensation when you first apply the cream. This sensation goes
away after a few days of use. Pain relief usually begins within 1 - 2
Artificial joint fluid (Synvisc, Hyalgan) can be injected into the knee. It may relieve pain for 3 - 6 months.
helps maintain joint and overall movement. Ask your health care
provider to recommend an appropriate home exercise routine. Water
exercises, such as swimming, are especially helpful.
Other lifestyle recommendations include:
As the pain from your hip or knee OA becomes worse, keeping up with everyday activities may become more difficult or painful.
Sometimes making changes around the home will take some stress off your joints, and relieve some of the pain.
whose work is causing stress in certain joints should find ways to
reduce trauma. You may need to adjust your work area or change work
can help improve muscle strength and the motion of stiff joints, as well
as your sense of balance. Therapists have many techniques for treating
OA. If therapy does not make you feel better after 6 - 8 weeks, then it
likely will not work at all.
Massage therapy may also help provide
short-term pain relief. Make sure you work with an experienced massage
therapist who understands how to work with sensitive joint areas.
and braces can sometimes support weakened joints. Some prevent the
joint from moving; others allow some movement. You should use a brace
only when your doctor or therapist recommends one. Using a brace the
wrong way can cause joint damage, stiffness, and pain.
is a treatment based on Chinese medicine. How it works is not entirely
clear. Some studies have found that acupuncture may provide short-term
pain relief for people with OA.
pronounced "Sammy") is a man-made form of a natural byproduct of the
amino acid methionine. It has been marketed as a remedy for arthritis,
but scientific evidence to support these claims is lacking.
Severe cases of OA might need surgery to replace or repair damaged joints. Surgical options include:
person with OA is different. Pain and stiffness may prevent one person
from performing simple daily activities, while others are able to
maintain an active lifestyle that includes sports and other activities.
Your movement may become very limited. Treatment generally improves function.
- Adverse reactions to drugs used for treatment
- Decreased ability to perform everyday activities, such as personal hygiene, household chores, or cooking
- Decreased ability to walk
- Surgical complications
Calling your healthcare provider
Call your health care provider if you have symptoms of OA.
Weight loss can reduce the risk of knee OA in overweight women
(above is courtesy of NCBI.gov)
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