Hyaluronic acid is a lubricating substance commonly used for knee injections in patients with knee arthritis.
![hyaluronic acid injection into the knee](/sites/default/files/users/user1/hyaluronic-acid-injection.jpg)
The injection is inserted into the space under the kneecap.
Knee lubricant
Hyaluronic acid injections may provide relief for some weeks or months in patients with osteoarthritis of the knee. The material is generally derived from the red 'combs' of roosters or chickens, although sometimes it is derived from bacteria. It forms a gel which is similar to the natural lubricant inside the knee joint.
Synonyms:
hyaluronate
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