Hyaluronic acid is one of the main components of human tissues responsible for the body’s elasticity and ability to move. Recent studies have revealed that it can be used to help patients suffering from knee and hip arthritis known as osteoarthritis.
What are the uses of hyaluronic acid injections?
Hyaluronic acid is used to relieve joint pain resulting from osteoarthritis. It is used for patients who do not achieve adequate relief through simple analgesics such as acetaminophen, or through exercise and physical therapy.
What is the function of synovial fluid in the joint?
Synovial fluid in the joint has four functions:
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Preventing joints from rubbing against each other, thus protecting their linings from wear.
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Increasing joint lubrication, helping them work flexibly and easily.
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Acting as a filter, allowing nutrients to reach tendons and cartilage while preventing the passage of harmful cells and substances.
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Eliminating harmful inflammatory proteins, thereby relieving pain and swelling when the joint is injured.
The most important component of synovial fluid is a substance called hyaluronic acid, which allows synovial fluid to perform different functions simultaneously.
What are the indications for this injection?
Hyaluronic acid injections have been shown to have the following beneficial effects on joints:
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They replace some of the natural components present in synovial fluid (hyaluronans), leading to improved lubrication capacity.
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Hyaluronan coats the lining of damaged joint surfaces and covers the nerve endings that cause pain, thus relieving pain and protecting joint surfaces from inflammation.
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Hyaluronan also works directly to reduce inflammation in the joint.
What should I do after the injection?
To get the maximum benefit from this injection, you should rest the joint from any strenuous activity for one to two days.
What are the possible negative side effects of the injection?
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After receiving the first injection into the joint, you may experience pain, swelling, heat, redness, or fluid accumulation around the joint.
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These reactions are generally mild and do not last long, but sometimes fluid accumulation can be significant and painful. You should consult your doctor in cases where the swelling is extensive and painful.
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Joint infections in the knee after these injections are rarely reported.
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Skin rash and itching have been observed in patients after treatment.
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Other less common side effects include: muscle pain, facial redness or swelling, rapid heartbeat, nausea, dizziness, fever, chills, headache, difficulty breathing, swelling of the arms or legs, a tingling sensation in the skin, and in rare cases, a decrease in blood platelet count.
