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Osteoarthritis Symptoms and TreatmentsBy the National Institute of Health Use your browser's "back" button to navigate this osteoarthritis menu.
This article is for people who have osteoarthritis, their families, and others interested in learning more about the disorder. The article describes osteoarthritis and its symptoms and contains information about diagnosis and treatment, as well as current research efforts supported by the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) and other components of the National Institutes of Health (NIH). It also discusses pain relief, exercise, and quality of life for people with osteoarthritis. If you have further questions after reading this article, you may wish to discuss them with your doctor. What Is Osteoarthritis?Osteoarthritis (AH-stee-oh-ar-THREYE-tis) is the most common type of arthritis, especially among older people. Sometimes it is called degenerative joint disease or osteoarthrosis. Osteoarthritis is a joint disease that mostly affects the cartilage (KAR-til-uj). Cartilage is the slippery tissue that covers the ends of bones in a joint. Healthy cartilage allows bones to glide over one another. It also absorbs energy from the shock of physical movement. In osteoarthritis, the surface layer of cartilage breaks down and wears away. This allows bones under the cartilage to rub together, causing pain, swelling, and loss of motion of the joint. Over time, the joint may lose its normal shape. Also, bone spurs--small growths called osteophytes--may grow on the edges of the joint. Bits of bone or cartilage can break off and float inside the joint space. This causes more pain and damage. People with osteoarthritis usually have joint pain and limited movement. Unlike some other forms of arthritis, osteoarthritis affects only joints and not internal organs. For example, rheumatoid arthritis--the second most common form of arthritis--affects other parts of the body besides the joints. It begins at a younger age than osteoarthritis, causes swelling and redness in joints, and may make people feel sick, tired, and (uncommonly) feverish. Who Has Osteoarthritis?Osteoarthritis is one of the most frequent causes of physical disability among adults. More than 20 million people in the United States have the disease. By 2030, 20 percent of Americans--about 70 million people--will have passed their 65th birthday and will be at risk for osteoarthritis. Some younger people get osteoarthritis from joint injuries, but osteoarthritis most often occurs in older people. In fact, more than half of the population age 65 or older would show x-ray evidence of osteoarthritis in at least one joint. Both men and women have the disease. Before age 45, more men than women have osteoarthritis, whereas after age 45, it is more common in women. How Does Osteoarthritis Affect People?Osteoarthritis affects each person differently. In some people, it progresses quickly; in others, the symptoms are more serious. Scientists do not know yet what causes the disease, but they suspect a combination of factors, including being overweight, the aging process, joint injury, and stresses on the joints from certain jobs and sports activities. What
Areas Does Osteoarthritis Affect?
Osteoarthritis hurts people in more than their joints: their finances and lifestyles also are affected. Financial effects include
Lifestyle effects include
Despite these challenges, most people with osteoarthritis can lead active and productive lives. They succeed by using osteoarthritis treatment strategies, such as the following:
Osteoarthritis Basics: The Joint and Its PartsMost joints--the place where two moving bones come together--are designed to allow smooth movement between the bones and to absorb shock from movements like walking or repetitive movements. The joint is made up of:
How Do You Know if You Have Osteoarthritis?Usually, osteoarthritis comes on slowly. Early in the disease, joints may ache after physical work or exercise. Osteoarthritis can occur in any joint. Most often it occurs at the hands, knees, hips, or spine. Hands: Osteoarthritis of the fingers is one type of osteoarthritis that seems to have some hereditary characteristics; that is, it runs in families. More women than men have it, and they develop it especially after menopause. In osteoarthritis, small, bony knobs appear on the end joints of the fingers. They are called Heberden's (HEB-err-denz) nodes. Similar knobs, called Bouchard's (boo-SHARDZ) nodes, can appear on the middle joints of the fingers. Fingers can become enlarged and gnarled, and they may ache or be stiff and numb. The base of the thumb joint also is commonly affected by osteoarthritis. Osteoarthritis of the hands can be helped by medications, splints, or heat treatment. Cartilage: The Key to Healthy JointsCartilage is 65 to 80 percent water. Three other components make up the rest of cartilage tissue: collagen, proteoglycans, and chondrocytes.
Knees: The knees are the body's primary weight-bearing joints. For this reason, they are among the joints most commonly affected by osteoarthritis. They may be stiff, swollen, and painful, making it hard to walk, climb, and get in and out of chairs and bathtubs. If not treated, osteoarthritis in the knees can lead to disability. Medications, weight loss, exercise, and walking aids can reduce pain and disability. In severe cases, knee replacement surgery may be helpful. Hips: Osteoarthritis in the hip can cause pain, stiffness, and severe disability. People may feel the pain in their hips, or in their groin, inner thigh, buttocks, or knees. Walking aids, such as canes or walkers, can reduce stress on the hip. Osteoarthritis in the hip may limit moving and bending. This can make daily activities such as dressing and foot care a challenge. Walking aids, medication, and exercise can help relieve pain and improve motion. The doctor may recommend hip replacement if the pain is severe and not relieved by other methods. Spine: Stiffness and pain in the neck or in the lower back can result from osteoarthritis of the spine. Weakness or numbness of the arms or legs also can result. Some people feel better when they sleep on a firm mattress or sit using back support pillows. Others find it helps to use heat treatments or to follow an exercise program that strengthens the back and abdominal muscles. In severe cases, the doctor may suggest surgery to reduce pain and help restore function. How Do Doctors Diagnose Osteoarthritis?No single test can diagnose osteoarthritis. Most doctors use a combination of the following methods to diagnose the disease and rule out other conditions: Clinical history: The doctor begins by asking the patient to describe the symptoms, and when and how the condition started. Good doctor-patient communication is important. The doctor can give a better assessment if the patient gives a good description of pain, stiffness, and joint function, and how they have changed over time. It also is important for the doctor to know how the condition affects the patient's work and daily life. Finally, the doctor also needs to know about other medical conditions and whether the patient is taking any medicines. Physical examination: The doctor will check the patient's general health, including checking reflexes and muscle strength. Joints bothering the patient will be examined. The doctor will also observe the patient's ability to walk, bend, and carry out activities of daily living. X rays: Doctors take x rays to see how much joint damage has been done. X rays of the affected joint can show such things as cartilage loss, bone damage, and bone spurs. But there often is a big difference between the severity of osteoarthritis as shown by the x ray and the degree of pain and disability felt by the patient. Also, x rays may not show early osteoarthritis damage, before much cartilage loss has taken place. Other tests: The doctor may order blood tests to rule out other causes of symptoms. Another common test is called joint aspiration, which involves drawing fluid from the joint for examination. It usually is not difficult to tell if a patient has osteoarthritis. It is more difficult to tell if the disease is causing the patient's symptoms. Osteoarthritis is so common--especially in older people--that symptoms seemingly caused by the disease actually may be due to other medical conditions. The doctor will try to find out what is causing the symptoms by ruling out other disorders and identifying conditions that may make the symptoms worse. The severity of symptoms in osteoarthritis is influenced greatly by the patient's attitude, anxiety, depression, and daily activity level. How Is Osteoarthritis Treated?Most successful treatment programs involve a combination of treatments tailored to the patient's needs, lifestyle, and health. Osteoarthritis treatment has four general goals:
Treatment Approaches to Osteoarthritis
Osteoarthritis treatment plans often include ways to manage pain and improve function. Such plans can involve exercise, rest and joint care, pain relief, weight control, medicines, surgery, and nontraditional treatment approaches. Exercise: Research shows that exercise is one of the best treatments for osteoarthritis. Exercise can improve mood and outlook, decrease pain, increase flexibility, improve the heart and blood flow, maintain weight, and promote general physical fitness. Exercise is also inexpensive and, if done correctly, has few negative side effects. The amount and form of exercise will depend on which joints are involved, how stable the joints are, and whether a joint replacement has already been done. (See Be a Winner! Practice Self-Care and Keep a "Good-Health Attitude.") On the Move: Fighting Osteoarthritis With ExerciseYou can use exercises to keep strong and limber, extend your range of movement, and reduce your weight.Some different types of exercise include the following: Strength
exercises: These can be performed with exercise bands, inexpensive
devices that add resistance. Ask your doctor or physical therapist what exercises are best for you. Ask for guidelines on exercising when a joint is sore or if swelling is present. Also, check if you should (1) use pain-relieving drugs, such as analgesics or anti-inflammatories (also called NSAIDs), to make exercising easier, or (2) use ice afterwards. Rest and joint care: Treatment plans include regularly scheduled rest. Patients must learn to recognize the body's signals, and know when to stop or slow down, which prevents pain caused by overexertion. Some patients find that relaxation techniques, stress reduction, and biofeedback help. Some use canes and splints to protect joints and take pressure off them. Splints or braces provide extra support for weakened joints. They also keep the joint in proper position during sleep or activity. Splints should be used only for limited periods because joints and muscles need to be exercised to prevent stiffness and weakness. An occupational therapist or a doctor can help the patient get a properly fitting splint. Nondrug pain relief: People with osteoarthritis may find nondrug ways to relieve pain. Warm towels, hot packs, or a warm bath or shower to apply moist heat to the joint can relieve pain and stiffness. In some cases, cold packs (a bag of ice or frozen vegetables wrapped in a towel can relieve pain or numb the sore area. (Check with a doctor or physical therapist to find out if heat or cold is the best treatment.) Water therapy in a heated pool or whirlpool also may relieve pain and stiffness. For osteoarthritis in the knee, patients may wear insoles or cushioned shoes to redistribute weight and reduce joint stress. Weight control: Osteoarthritis patients who are overweight or obese need to lose weight. Weight loss can reduce stress on weight-bearing joints and limit further injury. A dietitian can help patients develop healthy eating habits. A healthy diet and regular exercise help reduce weight. Medicines: Doctors prescribe medicines to eliminate or reduce pain and to improve functioning. Doctors consider a number of factors when choosing medicines for their patients with osteoarthritis. Two important factors are the intensity of the pain and the potential side effects of the medicine. Patients must use medicines carefully and tell their doctors about any changes that occur. The following types of medicines are commonly used in treating osteoarthritis:
Questions To Ask Your Doctor or Pharmacist About Medicines
Most medicines used to treat osteoarthritis have side effects, so it is important for people to learn about the medicines they take. Even nonprescription drugs should be checked. Several groups of patients are at high risk for side effects from NSAIDs, such as people with a history of peptic ulcers or digestive tract bleeding, people taking oral corticosteroids or anticoagulants (blood thinners), smokers, and people who consume alcohol. Some patients may be able to help reduce side effects by taking some medicines with food. Others should avoid stomach irritants such as alcohol, tobacco, and caffeine. Some patients try to protect their stomachs by taking other medicines that coat the stomach or block stomach acids. These measures help, but they are not always completely effective. Surgery: For many people, surgery helps relieve the pain and disability of osteoarthritis. Surgery may be performed to
Surgeons may replace affected joints with artificial joints called prostheses. These joints can be made from metal alloys, high-density plastic, and ceramic material. They can be joined to bone surfaces by special cements. Artificial joints can last 10 to 15 years or longer. About 10 percent of artificial joints may need revision. Surgeons choose the design and components of prostheses according to their patient's weight, sex, age, activity level, and other medical conditions. The decision to use surgery depends on several things. Both the surgeon and the patient consider the patient's level of disability, the intensity of pain, the interference with the patient's lifestyle, the patient's age, and occupation. Currently, more than 80 percent of osteoarthritis surgery cases involve replacing the hip or knee joint. After surgery and rehabilitation, the patient usually feels less pain and swelling, and can move more easily. Nontraditional Approaches: Among the alternative therapies used to treat osteoarthritis are the following:
Health Professionals Who Treat OsteoarthritisMany types of health professionals care for people with osteoarthritis:
Be a Winner! Practice Self-Care and Keep a "Good-Health Attitude"People with osteoarthritis can enjoy good health despite having the disease. How? By learning self-care skills and developing a "good-health attitude." Self-care is central to successfully managing the pain and disability of osteoarthritis. People have a much better chance of having a rewarding lifestyle when they educate themselves about the disease and take part in their own care. Working actively with a team of health care providers enables people with the disease to minimize pain, share in decisionmaking about treatment, and feel a sense of control over their lives. Research shows that people with osteoarthritis who take part in their own care report less pain and make fewer doctor visits. They also enjoy a better quality of life. Self-Management
Programs Do Help
Self-Help and Education Programs: Three kinds of programs help people learn about osteoarthritis, learn self-care, and improve their good-health attitude. These programs include
These programs teach people about osteoarthritis, its treatments, exercise and relaxation, patient and health care provider communication, and problem solving. Research has shown that these programs have clear and long-lasting benefits. Exercise: Regular physical activity plays a key role in self-care and wellness. Two types of exercise are important in osteoarthritis management. The first type, therapeutic exercises, keep joints working as well as possible. The other type, aerobic conditioning exercises, improve strength and fitness, and control weight. Patients should be realistic when they start exercising. They should learn how to exercise correctly, because exercising incorrectly can cause problems. Most people with osteoarthritis exercise best when their pain is least severe. Start with an adequate warmup and begin exercising slowly. Resting frequently ensures a good workout. It also reduces the risk of injury. A physical therapist can evaluate how a patient's muscles are working. This information helps the therapist develop a safe, personalized exercise program to increase strength and flexibility. Many people enjoy sports or other activities in their exercise program. Good activities include swimming and aquatic exercise, walking, running, biking, cross-country skiing, and using exercise machines and exercise videotapes. People with osteoarthritis should check with their doctor or physical therapist before starting an exercise program. Health care providers will suggest what exercises are best for you, how to warm up safely, and when to avoid exercising a joint affected by arthritis. Pain medications and applying ice after exercising may make exercising easier. Exercises for Osteoarthritis  People with osteoarthritis should do different kinds of exercise for different benefits to the body Body, Mind, Spirit: Making the most of good health requires careful attention to the body, mind, and spirit. People with osteoarthritis must plan and develop daily routines that maximize their quality of life and minimize disability. They also need to evaluate these routines periodically to make sure they are working well. Good health also requires a positive attitude. People must decide to make the most of things when faced with the challenges of osteoarthritis. This attitude--a good-health mindset--doesn't just happen. It takes work, every day. And with the right attitude, you will achieve it. Enjoy a "Good-Health Attitude"
The leading role in osteoarthritis research is played by the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), within the National Institutes of Health (NIH). The NIAMS funds many researchers across the United States to study osteoarthritis. It has established a Specialized Center of Research devoted to osteoarthritis. Also, many researchers study arthritis at NIAMS Multipurpose Arthritis and Musculoskeletal Diseases Centers and Multidisciplinary Clinical Research Centers. These centers conduct basic, laboratory, and clinical research aimed at understanding the causes, treatment options, and prevention of arthritis and musculoskeletal diseases. Center researchers also study epidemiology, health services, and professional, patient, and public education. The NIAMS also supports multidisciplinary clinical research centers that expand clinical studies for diseases like osteoarthritis. For years, scientists thought that osteoarthritis was simply a disease of "wear and tear" that occurred in joints as people got older. In the last decade, however, research has shown that there is more to the disorder than aging alone. The production, maintenance, and breakdown of cartilage, as well as bone changes in osteoarthritis, are now seen as a series or cascade of events. Many researchers are trying to discover where in that cascade of events things go wrong. By understanding what goes wrong, they hope to find new ways to prevent or treat osteoarthritis. Some key areas of research are described below. Animal Models: Animals help researchers understand how diseases work and why they occur. Animal models help researchers learn many things about osteoarthritis, such as what happens to cartilage, how treatment strategies might work, and what might prevent the disease. Animal models also help scientists study osteoarthritis in very early stages before it causes detectable joint damage. Diagnostic Tools: Some scientists want to find ways to detect osteoarthritis at earlier stages so that they can treat it earlier. They seek specific abnormalities in the blood, joint fluid, or urine of people with the disease. Other scientists use new technologies to analyze the differences between the cartilage from different joints. For example, many people have osteoarthritis in the knees or hips, but few have it in the ankles. Can ankle cartilage be different? Does it age differently? Answering these questions will help us understand the disease better. Genetics Studies: Researchers suspect that inheritance plays a role in 25 to 30 percent of osteoarthritis cases. Researchers have found that genetics may play a role in approximately 40 to 65 percent of hand and knee osteoarthritis cases. They suspect inheritance might play a role in other types of osteoarthritis, as well. Scientists have identified a mutation (a gene defect) affecting collagen, an important part of cartilage, in patients with an inherited kind of osteoarthritis that starts at an early age. The mutation weakens collagen protein, which may break or tear more easily under stress. Scientists are looking for other gene mutations in osteoarthritis. Recently, researchers found that the daughters of women who have knee osteoarthritis have a significant increase in cartilage breakdown, thus making them more susceptible to disease. In the future, a test to determine who carries the genetic defect (or defects) could help people reduce their risk for osteoarthritis with lifestyle adjustments. Tissue Engineering: This technology involves removing cells from a healthy part of the body and placing them in an area of diseased or damaged tissue in order to improve certain body functions. Currently, it is used to treat small traumatic injuries or defects in cartilage, and, if successful, could eventually help treat osteoarthritis. Researchers at the NIAMS are exploring three types of tissue engineering. The two most common methods being studied today include cartilage cell replacement and stem cell transplantation. The third method is gene therapy.
Comprehensive Treatment Strategies: Effective treatment for osteoarthritis takes more than medicine or surgery. Getting help from a variety of care professionals often can improve patient treatment and self-care. (See Health Professionals Who Treat Osteoarthritis.) Research shows that adding patient education and social support is a low-cost, effective way to decrease pain and reduce the amount of medicine used. Exercise plays a key part in comprehensive treatment. Researchers are studying exercise in greater detail and finding out just how to use it in treating or preventing osteoarthritis. For example, several scientists have studied knee osteoarthritis and exercise. Their results included the following:
Research has shown that losing extra weight can help people who already have osteoarthritis. Moreover, overweight or obese people who do not have osteoarthritis may reduce their risk of developing the disease by losing weight. Using NSAIDs: Many people who have osteoarthritis have persistent pain despite taking simple pain relievers such as acetaminophen. Some of these patients take NSAIDs instead. Health care providers are concerned about long-term NSAID use because it can lead to an upset stomach, heartburn, nausea, and more dangerous side effects, such as ulcers. Scientists are working to design and test new, safer NSAIDs. One example currently available is a class of selective NSAIDs called COX-2 inhibitors. Traditional NSAIDs prevent inflammation by blocking two related enzymes in the body called COX-1 and COX-2. The gastrointestinal side effects associated with traditional NSAIDs seems to be associated mainly with blocking the COX-1 enzyme, which helps protect the stomach lining. The new selective COX-2 inhibitors, however, primarily block the COX-2 enzyme, which helps control inflammation in the body. As a result, COX-2 inhibitors reduce pain and inflammation but are less likely than traditional NSAIDs to cause gastrointestinal ulcers and bleeding. However, research shows that some COX-2 inhibitors may not protect against heart disease as well as traditional NSAIDs, so check with your doctor if you have concerns. Drugs to Prevent Joint Damage: No treatment actually prevents osteoarthritis or reverses or blocks the disease process once it begins. Present treatments just relieve the symptoms. Researchers are looking for drugs that would prevent, slow down, or reverse joint damage. One experimental antibiotic drug, doxycycline, may stop certain enzymes from damaging cartilage. The drug has shown some promise in clinical studies, but more studies are needed. Researchers also are studying growth factors and other natural chemical messengers. These potential medicines may be able to stimulate cartilage growth or repair. Acupuncture: During an acupuncture treatment, a licensed acupuncture therapist inserts very fine needles into the skin at various points on the body. Scientists think the needles stimulate the release of natural, pain-relieving chemicals produced by the brain or the nervous system. Researchers are studying acupuncture treatment of patients who have knee osteoarthritis. Early findings suggest that traditional Chinese acupuncture is effective for some patients as an additional therapy for osteoarthritis, reducing pain and improving function. Nutritional Supplements: Nutritional supplements are often reported as helpful in treating osteoarthritis. Such reports should be viewed with caution, however, since very few studies have carefully evaluated the role of nutritional supplements in osteoarthritis.
Hyaluronic Acid: Injecting this substance into the knee joint provides long-term pain relief for some people with osteoarthritis. Hyaluronic acid is a natural component of cartilage and joint fluid. It lubricates and absorbs shock in the joint. The Food and Drug Administration (FDA) approved this therapy for patients with osteoarthritis of the knee who do not get relief from exercise, physical therapy, or simple analgesics. Researchers are presently studying the benefits of using hyaluronic acid to treat osteoarthritis. Estrogen: In studies of older women, scientists found a lower risk of osteoarthritis in women who had used oral estrogens for hormone replacement therapy. The researchers suspect having low levels of estrogen could increase the risk of developing osteoarthritis. Additional studies are needed to answer this question. Hope for the FutureResearch is opening up new avenues of treatment for people with osteoarthritis. A balanced, comprehensive approach is still the key to staying active and healthy with the disease. People with osteoarthritis should combine exercise, relaxation education, social support, and medicines in their treatment strategies. Meanwhile, as scientists unravel the complexities of the disease, new treatments and prevention methods should appear. They will improve the quality of life for people with osteoarthritis and their families. Additional ResourcesNational
Institute of Arthritis and Musculoskeletal and Skin Diseases NIAMS provides information about various forms of arthritis and rheumatic diseases. It distributes patient and professional education materials and also refers people to other sources of information. American
College of Rheumatology This association provides referrals to rheumatologists and physical and occupational therapists who have experience working with people who have osteoarthritis. The organization also provides educational materials and guidelines. American
Academy of Orthopaedic Surgeons
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Osteoarthritis - Natural TreatmentsBy Marcus Laux, ND Osteoarthritis is the most prevalent form of arthritis in the U.S., according to the Arthritis Foundation. One-third of all American adults have X-ray evidence of osteoarthritis of the hand, foot, knee, or hip. Osteoarthritis is responsible for more than 7 million physician visits per year and is second only to cardiovascular disease as the cause of chronic disability in adults. As Baby Boomers age, the number of people suffering from osteoarthritis is expected to rapidly increase in the next 10 years.2 While osteoarthritis research has led to the development of promising new prescription and over-the-counter medications aimed at reducing pain, none has created the excitement of glucosamine sulfate, which actually addresses the underlying joint destruction.5 What is osteoarthritis?Osteoarthritis is a complex, metabolic disorder of the cartilage and bones of certain joints.1,4 However, to fully understand how osteoarthritis develops, we need to understand how joints work. A joint is formed when two or more bones are brought together and held in place by muscles and tendons. Some joints have very little range of movement, such as the joints of the ribs, while others have much more range of movement. Hips, knees, elbows, wrists, and thumbs are termed synovial joints, and have the greatest range of movement and mobility of human joints. To allow such mobility, synovial joints have a unique structure.11 The bones that form synovial joints are covered with cartilage. Tough fibrous tissue encloses the area between the bone ends and is called the joint capsule. The joint cavity within the capsule is lined with an inner membrane, called the synovial membrane. The membrane secretes synovial fluid, a thick, slippery fluid that fills the small space around and between the two bones. This fluid contains many substances that lubricate the joint and ease movement.4,11 The cartilage of synovial joints serves two very important functions. First, it provides a remarkably smooth weight-bearing surface; synovial joints move easily. Secondly, synovial cartilage serves as a shock absorber, providing a soft, flexible foundation. Healthy cartilage absorbs the force of the energy, transmits the load to the bone, and distributes the mechanical stress created by joint movement.4,11 Synovial joints function under almost continual mechanical stress. A joint’s ability to withstand or resist this stress is a reflection of its health. When the mechanical stress is too great or the joint’s ability to resist this stress is compromised, physical changes occur in the cartilage covering the bones.4,11 Cartilage is a tough, elastic tissue, comprised mostly of water, collagen, and complex proteins called proteoglycans.12 In osteoarthritis, the cartilage starts to weaken, becomes frayed, and eventually breaks down. This exposes the bones of the joint, which then rub together. A gritty feeling and grinding sound may occur when an osteoarthritic joint is bent and flexed. As osteoarthritis progresses, bits of bone and cartilage often break off and float inside the joint space. The bones may enlarge, causing the joint to lose its normal shape. Tiny bone spurs may grow on the joints’ sides and edges. These physical changes in the diseased joint are responsible for progressive damage and continual pain.4,13 People with osteoarthritis most frequently describe their pain as deep and aching. The pain not only is felt in the affected joint but may also be present in the surrounding and supporting muscles.3 Joint inflammation also may occur, increasing the already considerable discomfort.1,4 Joint stiffness is another unfortunate component of osteoarthritis. Exercising the joint most often results in increased pain; however, stiffness tends to follow periods of inactivity.4 Humid weather often makes all osteoarthritis symptoms worse.3 As the disease progresses, the pain may occur even when the joint is at rest, creating sleepless nights and miserable days.3,4 What causes osteoarthritis?Osteoarthritis’ exact cause remains unknown. Researchers know aging doesn’t appear to cause osteoarthritis. Cartilage in people with the disease show many destructive changes not seen in older persons without the disease.1,4,13 However, certain conditions do seem to trigger osteoarthritis or make it worse. Some families seem to have a lot of osteoarthritis, pointing to a genetic factor. This is most commonly seen in people who have osteoarthritis of the hands.4 Repeated trauma can contribute to osteoarthritis, too. Athletes, extremely active people, and individuals who have physically demanding jobs often develop the disease. Persons who have certain bone disorders are more prone to osteoarthritis due to the continuous, uneven stress in their hips and knees.4,13 Obesity also is a risk factor for the disease. In overweight women, osteoarthritis of the knee is fairly common.13 Excess pounds also may have a direct metabolic effect on cartilage beyond the effects of increased joint stress14,15 Obese people also often have more dense bones. Research has shown dense bones may provide less shock-absorbing function than thinner bones, allowing more direct trauma to the cartilage.16 Can osteoarthritis be prevented?While there is currently no sure way to prevent osteoarthritis or slow its progression, some lifestyle changes may reduce or delay symptoms. The Arthritis Foundation states that maintaining a healthy weight, losing weight if needed, and regular exercise are effective osteoarthritis prevention measures.1 Optimal calcium intake in younger years is vital to ensure a healthy aging skeletal system.17-19 Vitamins A, C, D, and E have been studied for their role in osteoarthritis prevention. These vitamins also have shown benefit in individuals who have osteoarthritis.20-22 What treatments are available for osteoarthritis?The goal of treatment is to reduce or relieve pain, maintain or improve movement, and minimize any potential permanent disability.4 Typically, nonsteroidal anti-inflammatory druGlucosamine Sulfate or NSAIDs (pronounced “n-sayds”) such as aspirin and ibuprofen are used for pain and inflammation relief. These medications are effective in treating only the pain of osteoarthritis.3 These medications have many side effects, some of which are serious. NSAID induced gastrointestinal complications cause more than 100,000 hospitalizations and nearly 16,500 deaths annually in the U.S.23 Aspirin can cause an extremely annoying and continual ringing in the ears. NSAIDs frequently cause damage to the stomach lining, which can produce uncomfortable heartburn and abdominal pain. Continued NSAID use may lead to the development of stomach ulcers. NSAIDrelated ulcers can perforate the stomach lining and cause life-threatening bleeding.3 Most NSAIDs also interfere with blood clotting and may cause kidney damage. When older persons take NSAIDs, dizziness, drowsiness, memory loss, and decreased attention span may occur.3 Acetaminophen (Tylenol® and similar medications) is similar to aspirin and other NSAIDs in its pain-relief abilities. However, acetaminophen doesn’t reduce inflammation. 24 And while acetaminophen doesn’t have the same side effects of aspirin and other NSAIDs, if large doses are taken, liver damage can occur.23 Newer medications called COX-2 inhibitors provide both pain relief and reduce inflammation without the many side effects of acetaminophen, aspirin, and other NSAIDs.25,26 More recent research has indicated that, in certain situations, COX-2 inhibitors also can cause stomach lining damage and bleeding.27,28 While aspirin, NSAIDs, and COX-2 inhibitors may reduce osteoarthritis pain, they do nothing to stop or slow down cartilage deterioration. In other words, these medications have no effect on the disease itself.24 That is why many believe glucosamine sulfate and chondroitin sulfate are preferable to pain relievers and antiinflammatory medications in osteoarthritis treatment: they actually improve synovial joint health.12 And they do this without potentially life-threatening side effects. How does Glucosamine Sulfate and Chondroitin Sulfate work?Glucosamine Sulfate improves the health of joints affected by osteoarthritis. This supplement is so effective that even physicians who mostly rely on conventional medications routinely recommend it to their patients with osteoarthritis. In fact, Glucosamine Sulfate is so good at treating osteoarthritis, many physicians use it for their own osteoarthritic joints.29 There is even more good news. When glucosamine sulfate is combined with lowmolecular weight Chondroitin Sulfate, even greater benefits can be achieved. Glucosamine Sulfate and Chondroitin Sulfate are naturally occurring compounds found in human joints.6,7 The right Glucosamine Sulfate/Chondroitin Sulfate combination actually reverses damage in joints affected by osteoarthritis, in turn significantly reducing pain and stiffness.8-10 Glucosamine occurs naturally in the body and is found in synovial fluid. Glucosamine is a basic building block for proteoglycan, one of the important compounds of synovial cartilage.5,30,31 It also is required for the formation of lubricants and protective agents for the joints.30 In Europe, Glucosamine Sulfate and Chondroitin Sulfate have been used to treat osteoarthritis for more than 10 years. While persons with arthritis felt much better when they took Glucosamine Sulfate and Chondroitin Sulfate, no one really knew how these compounds worked. When European and American researchers first started to study glucosamine, they discovered Glucosamine Sulfate can reduce synovial joint inflammation. This explains why people felt better after taking it. What has additional study of Glucosamine Sulfate and Chondroitin Sulfate revealed?As the scientific study of Glucosamine Sulfate progressed, researchers determined it can stimulate the growth of cartilage cells,32 inhibit proteoglycan breakdown, and rebuild cartilage damaged from osteoarthritis. 5,30,31 In other words, Glucosamine Sulfate does not simply make persons with osteoarthritis feel better; Glucosamine Sulfate actually makes persons with osteoarthritis get better. Glucosamine Sulfate is the form of glucosamine used in research. It’s the sulfate salt of glucosamine and breaks down into glucosamine and sulfate ions in the body.32 The sulfate part of Glucosamine Sulfate plays an important role in proteoglycan synthesis.30 Chondroitin Sulfate also provides cartilage strength and resilience.9 Chondroitin Sulfate is an important component of the cartilage proteoglycan of synovial joints. Because Chondroitin Sulfate helps the production of proteoglycans, researchers believe Chondroitin Sulfate works in a similar nature to Glucosamine Sulfate.9,10 Couldn’t Glucosamine Sulfate and Chondroitin Sulfate be taken on their own? Is there any benefit in taking them together?Research has discovered Glucosamine Sulfate and Chondroitin Sulfate act synergistically (work well together) in improving joint health. Several studies have investigated this action32-37 and it’s recommended that Glucosamine Sulfate and Chondroitin Sulfate be taken together. However, lowmolecular weight chondroitin sulfate (Chondroitin Sulfate) is the preferred Chondroitin Sulfate form, and the form that has shown the most promise in studies. Why is it important to take lowmolecular weight Chondroitin Sulfate?When Chondroitin Sulfate was first studied, it was given to six healthy volunteers, six patients with rheumatoid arthritis, and six patients with osteoarthritis. Researchers then measured the levels of Chondroitin Sulfate in all study subjects. They found no evidence of Chondroitin Sulfate in any of the subjects.38 This single study led many physicians and scientists to believe Chondroitin Sulfate can’t be absorbed, and was not an effective natural treatment. However, several other studies in healthy volunteers have reported Chondroitin Sulfate can be absorbed.39-43 The distinct difference for these findinGlucosamine Sulfate is thought to be associated with the types of Chondroitin Sulfate used in the studies. Some forms are much more absorbable than others. This was demonstrated in a recent study using Chondroitin Sulfate with lower molecular weight. A higher absorption is observed for low-molecular weight Chondroitin Sulfate.43 This means Chondroitin Sulfate products with a low molecular weight may be better absorbed, allowing the Chondroitin Sulfate to get into the bloodstream and the synovial fluid of joints where it’s needed. Are there other supplements that can help osteoarthritis?Several vitamins, minerals, enzymes, and natural supplements have benefits for individuals with osteoarthritis. Proteolytic enzymes effectively offer relief of the pain, stiffness, and swelling of osteoarthritis. Folic acid and vitamin B12 can reduce the number of tender joints and increase joint mobility.43 Vitamins C, D, and E not only may prevent osteoarthritis, but inhibit the disease’s progression.22,44 Niacinamide improves joint function, range of motion, and muscle strength.45 Clinical studies using the herb Boswellia serrata have yielded good results in osteoarthritis.46 Application of ointments on osteoarthritic joints may be helpful in reducing pain and stiffness. Menthol-based preparations can provide soothing relief to painful joints. Capsaicin ointments and gel made from cayenne pepper also are very beneficial. When applied to the skin, capsaicin first stimulates, then blocks, nerve fibers that transmit pain messages. Capsaicin depletes nerve fibers of a neurotransmitter called substance P. This neurotransmitter transmits pain messages and activates inflammation in osteoarthritis. Capsaicin ointment is very effective in relieving osteoarthritis pain in many individuals.47,48 Is there anything else I can do for joint pain and stiffness?When osteoarthritis occurs in the hands, use of a paraffin dip can be very comforting.1 A licensed health care practitioner can provide information about how to safely use paraffin dips at home. Exercise is an excellent way to keep joints mobile, decrease pain, and increase body strength, too. Water aerobiChondroitin Sulfate also can reduce the pressure and stress on joints.49,50 The Arthritis Foundation strongly suggests making movement an integral part of your life. When you’re in less pain and have more energy, more range-ofmotion, and a better outlook on life, you’ll reduce stress and be a much healthier person despite your osteoarthritis. One important last thoughtWhen we don’t feel well, we sometimes have a tendency to self-diagnose. If you haven’t been evaluated by a licensed health care practitioner for your joint pain and stiffness, you need to do so. These symptoms may be caused by other illnesses and may require much different treatment. Only a licensed health care practitioner can provide a certain diagnosis of osteoarthritis. ConclusionOsteoarthritis may be a part of life for many of us as we age; however, constant pain and stiffness need not be. Glucosamine Sulfate combined with absorbable Chondroitin Sulfate can actually improve damage in joints affected by osteoarthritis and significantly reduce pain and stiffness. And it can be an empowering way to improve your health. References1. Arthritis Foundation. Osteoarthritis. Available at: www.arthritis.org/answers/ diseasecenter/oa.html Accessed June 26, 2001. 2. Buckwalter JA, Stanish WD, Rosier RN, et al. The increasing need for nonoperative treatment of patients with osteoarthritis. Clin Orthop. 2001;345:36-45. 3. McCaffery M, Pasero C. Pain characteristiChondroitin Sulfate: osteoarthritis. In: Pain: Clinical Manual. 2nd ed. St. Louis, Mo: Mosby, 1999: 523-524. 4. Bancroft DA, Pigg JS. Osteoarthritis syndromes. In: Porth CM. Pathophysiology: Concepts of Altered Health States. 5th ed. Philadelphia, Pa: Lippincott; 1998: 1133-1138. 5. Gaby AR. Natural treatments for osteoarthritis. Altern Med Rev. 1999;4:330-441. 6. Uebelhart D, Thonar EJ, Zhang J, Williams JM. Protective effect of exogenous chondrotin 4,6-sulfate in the acute degradation of articular cartilage in the rabbit. Osteoarthritis Cartilage. 1998;6:6-13. 7. Leeb BF, Schweitzer H, Montag K, Smolen JS. A meta-analysis of chondroitin sulfate in the treatment of osteoarthritis. 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Medical Review of Herbal Remedies
