Arthritis is a medical condition impacting the body's joints, such as knees, where two bones converge, and results in swelling, pain, and stiffness within these articulations. This affliction can significantly hinder mobility and cause discomfort. Among the various forms of arthritis, osteoarthritis is prevalent, typically manifesting with advancing age. Rheumatoid arthritis is another common variant, wherein the body's immune system, ordinarily responsible for combating infections, erroneously targets the lining of the joints, leading to inflammation.

Arthritis in Knee

Symptoms of Arthritis in Knee

Arthritis in the knee can cause various symptoms, varying in intensity from person to person.

Pain. It is often the most noticeable symptom. The pain might be constant, or it may come and go. It can get worse when you're active, after sitting for a while, or in the morning.
Swelling and Warmth. The knee may become swollen, and you might notice it feeling warm. It is due to inflammation in the joint.
Stiffness. The knee might feel stiff, especially in the morning or after sitting for a long time. This stiffness can make it hard to move your knee normally.
Reduced Mobility. It may be hard to straighten or bend the knee fully. Over time, arthritis can cause a decrease in your range of motion.
Creaking or Crackling Sounds. You might hear a grinding, creaking, or crackling sound when you move your knee. It is known as crepitus and happens when the roughened surfaces of your bone rub against each other.
Weakness or Instability. The knee might feel weak or as though it will give way. It can happen if the muscles around the knee aren't as strong as they used to be or if the structure of the joint has changed.
Deformity. In severe cases, arthritis can cause changes in the shape of the knee joint, leading to visible deformity.

Arthritis in Knee

Causes of Arthritis in Knee

Several factors can cause arthritis in the knee, and understanding these can help manage the condition. Some of the most common causes of arthritis are

Age. As people age, the risk of developing arthritis, particularly osteoarthritis, increases. This is due to the possibility of arthritis developing from the gradual deterioration of the knee joint's cartilage.
Weight. Being overweight puts extra pressure on the knee joints. Over time, this can cause the cartilage to wear away more quickly, leading to arthritis.
Joint Injuries. Injuries to the knee, such as those that occur during sports or accidents, can lead to arthritis in the future. Even injuries from many years ago can increase the risk.
Genetics. Sometimes, arthritis in the knee can be linked to genetics. If other people in your family have arthritis, you may also be more likely to develop it.
Overuse. Overusing the knee joint, particularly in certain jobs or sports, can lead to wear and tear on the cartilage, resulting in arthritis.
Other Health Conditions. Certain health conditions, such as rheumatoid arthritis or metabolic disorders, can also affect the knees. An inflammatory disease called rheumatoid arthritis results in inflammation of the joints, and metabolic diseases can cause gout, which affects the knees.

Treatment of Arthritis in Knees

Treating arthritis in the knee involves a combination of methods to reduce pain, improve joint function, and prevent further damage.

Pain Relief Medications. Over-the-counter painkillers like paracetamol can help manage pain. Ibuprofen and other nonsteroidal anti-inflammatory medications (NSAIDs) are frequently used to lessen pain and swelling.
Prescription Medications. For more severe pain or specific types of arthritis like rheumatoid arthritis, stronger prescription medications may be necessary. These can include disease-modifying antirheumatic drugs (DMARDs) and corticosteroids.
Physiotherapy. A physiotherapist can teach exercises that strengthen the muscles around the knee, improving mobility and reducing stress on the joint.
Weight Management. If you're overweight, losing weight can significantly reduce the stress on your knees, alleviating pain and preventing further joint damage.
Supportive Devices. Walking aids like canes or knee braces can help take the load off the affected knee.
Heat and Cold Treatments. Applying heat or ice can help reduce knee pain and oedema. Heat treatment can relax and soothe muscles, while cold treatment can reduce inflammation.
Joint Injections. For some people, corticosteroid injections into the knee joint can temporarily relieve pain and swelling.
Lifestyle Changes. Regular, gentle exercises like swimming or walking can improve flexibility and joint function. Steer clear of activities that will strain your knees excessively.
Alternative Therapies. Some people find relief through acupuncture, massage, or taking supplements like glucosamine and chondroitin, although the effectiveness of these treatments can vary.
Surgery. In cases where other treatments haven't helped, surgery might be an option. This can range from arthroscopic procedures to clean out the joint to partial or total knee replacement.

Conclusion

Knee arthritis, characterised by joint pain, swelling, and stiffness, primarily stems from age, injury, or genetics. Effective treatments include medication, lifestyle changes, and physiotherapy, focusing on symptom relief and mobility enhancement.

Reference link:

https://www.hopkinsmedicine.org/health/conditions-and-diseases/knee-arthritis
https://my.clevelandclinic.org/health/diseases/21978-arthritis-of-the-knee