Osteoarthritis

Our joints can get sore.

This happens when the soft parts in a joint wear down. The bone can also change.

This can make joints feel stiff. It can also cause pain. People might feel this in their hands or knees. It can even happen in the hips. Some people feel better when they rest. Moving can be hard for them.

Gentle exercise can help the body. It is good to stay active.

Osteoarthritis is a common disease that affects our joints.

It happens when the cartilage in a joint breaks down. Cartilage is the soft part that covers the ends of bones. When it wears away, the bone underneath can also change. This can lead to pain and stiffness. Some people also feel swelling in their joints.

This condition often affects the hands, knees, and hips.

It can also happen in the neck or lower back. Many people feel more stiff in the morning. Pain can also come from moving up and down stairs. Some joints might even make a crackling noise when they move. This is called crepitus.

There are many reasons why this happens. It can come from an old injury. It can also come from being overweight. Some people are even born with it due to their family history.

Doctors can use X-rays to see the changes in the bone. They may see small bony growths called osteophytes.

To help with the pain, people can use medicine. Gentle exercise and losing weight can also help. If the pain is very bad, a person might need surgery to replace the joint.

Osteoarthritis is a type of joint disease that happens when cartilage breaks down.

Cartilage is the soft layer that covers the ends of your bones. When this layer wears away, the bone underneath can also be affected. This condition is very common around the world. It is believed to be the fourth leading cause of disability. About 240 million people deal with it every year. It mostly affects the joints rather than internal organs. This makes it different from some other types of arthritis.

This disease works through a slow change in the joint.

In the beginning, the balance of water in the cartilage changes. The collagen fibers, which are strong structures, become disorganized. This causes the cartilage to lose its shape. As the cartilage disappears, the joint may develop small bony growths called osteophytes. These are also known as bone spurs. You might even hear a crackling noise called crepitus when you move. This happens because the smooth surfaces are no longer even.

Doctors use many tools to find out if someone has this condition.

They usually start by looking at a person's history and symptoms. They might use X-rays to see the joints clearly. On an X-ray, doctors look for narrow spaces between the bones. They also look for those bony spurs or small cysts. In 1990, experts created special rules to find hand osteoarthritis. These rules were very accurate at telling it apart from other diseases. Doctors use these tests to help plan the best care.

Many different factors can increase the risk of developing osteoarthritis.

Being overweight can put extra stress on the hips and knees. It is twice as common in people with obesity. Jobs that involve heavy lifting or kneeling can also cause it. An old injury to a joint is another major cause. Some people are even born with a higher risk due to family history. As people get older, the condition becomes more common. For example, 18% of women over age 60 are affected.

There are many ways to manage the pain and keep moving.

People often use medicines like paracetamol or ibuprofen to feel better. Gentle exercise and losing weight can also help the joints. If the pain is very hard to manage, surgery might be an option. Doctors can perform a joint replacement to fix the problem. Most hip and knee replacements are done because of osteoarthritis. An artificial joint can often last for more than 20 years.

Osteoarthritis is a degenerative joint disease. It involves the breakdown of joint cartilage and the underlying bone. This condition is a form of arthritis. It is believed to be the fourth leading cause of disability in the world. An estimated 240 million people worldwide have activity-limiting osteoarthritis. Unlike other types of arthritis, it only affects the joints. It does not affect internal organs.

The mechanism of the disease begins with subtle biochemical changes. In healthy cartilage, water content is finely balanced. Compressive forces drive water out of the cartilage. Meanwhile, osmotic pressure draws water back in. This balance relies on collagen fibers and proteoglycans. Proteoglycans create the osmotic pressure needed to hold water. During the onset of osteoarthritis, the collagen matrix becomes disorganized. There is also a decrease in proteoglycan content. This causes a net increase in water content within the cartilage. The loss of collagen outweighs the loss of proteoglycans. Eventually, the cartilage wears away and the underlying bone is affected.

As the disease progresses, several distinct structural changes occur. The ligaments within the joint may become thickened and fibrotic. The menisci, which are pads in the joint, can become damaged or wear away. In some cases, the menisci may be completely absent. New bone outgrowths called osteophytes, or bone spurs, often form on the margins of the joints. These spurs may attempt to improve the surface fit of the joint. The subchondral bone volume also increases. However, this bone becomes less mineralized.

Symptoms of osteoarthritis often progress slowly over many years. The most common symptoms are joint pain and stiffness. Stiffness is most common in the morning. It typically lasts less than thirty minutes after daily activities begin. Pain often worsens with prolonged activity and is relieved by rest. Some people experience joint swelling or a decreased range of motion. Moving an affected joint may cause a crackling noise called crepitus. This is common in the shoulder and knee joints. In smaller joints like the fingers, hard bony enlargements may form. These are called Heberden's nodes or Bouchard's nodes.

Many different factors can increase the risk of developing this condition. Mechanical stress is believed to be a primary cause. This stress can come from previous joint injuries or abnormal joint development. Obesity is a major risk factor. Osteoarthritis of the hips and knees is twice as common in people with obesity. Occupational stress also plays a role. Jobs involving heavy lifting, kneeling, or squatting increase the risk for knee and hip osteoarthritis. People who work in bent or twisted positions face higher risks for hip issues. Genetics and age are also significant factors.

Doctors use specific methods to diagnose osteoarthritis. They rely on a patient's medical history and clinical examinations. Medical imaging like X-rays can confirm the diagnosis. On an X-ray, doctors look for joint space narrowing. They also look for subchondral sclerosis and subchondral cyst formation. They look for the presence of osteophytes. In 1990, the American College of Rheumatology developed criteria for hand osteoarthritis. These criteria are 92% sensitive and 98% specific. This helps doctors distinguish it from other conditions like rheumatoid arthritis.

Management focuses on reducing pain and maintaining function. Lifestyle modifications are the mainstays of treatment. This includes exercise and weight loss. Losing weight can help relieve pain in the hips. Pain medications are also used. These include paracetamol and NSAIDs like ibuprofen or naproxen. Long-term opioid use is not recommended due to risks of addiction. If disability continues, joint replacement surgery may be an option. More than 90% of hip and knee replacements are due to osteoarthritis. An artificial joint typically lasts more than 20 years.

Osteoarthritis has a significant impact on global health. As of 2015, it affected about 237 million people. This represents roughly 3.3% of the world's population. The condition becomes more common as people age. Among those over 60, about 10% of males and 18% of females are affected. Osteoarthritis causes about 2% of years lived with disability. People with osteoarthritis of the hips or knees have a 20% increased risk of mortality. This may be due to reduced activity levels. The disease connects to broader issues of aging and physical mobility.