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Synovial fluid, also called synovia, is a viscous, non-Newtonian fluid found in the cavities of synovial joints. With its egg white –like consistency, [ 1 ] the principal role of synovial fluid is to reduce friction between the articular cartilage of synovial joints during movement. [ 2 ]
Aspiration of synovial fluid in cases of joint effusion or hemarthrosis can help reduce pressure around the joints, thus providing pain relief. Corticosteroid medications may also be injected into the joint capsule to provide pain relief and anti-inflammatory effects, especially for rheumatoid arthritis and less commonly osteoarthritis.
The injection of a steroid into a joint is used to reduce inflammation associated with conditions such as osteoarthritis, and the effects may last for up to 6 months following a single injection. [22] Hyaluronic acid injection is used to supplement the body's natural synovial fluid and decrease the friction and stiffness of the joint. [22]
Analysis of a sample of synovial fluid to look for signs of an infection (infectious arthritis) or uric acid crystals (gout) Imaging tests, such as X-rays or MRI scans, to evaluate the condition ...
Instead of blood, they get their nutrition from synovial fluid, Dr. Halfman states. Just like we need blood flow to keep our tissues happy, we need fluid in our joints to flow to keep them happy ...
The average molecular weight in human synovial fluid is 3–4 million Da, and hyaluronic acid purified from human umbilical cord is 3,140,000 Da; [4] other sources mention average molecular weight of 7 million Da for synovial fluid. [3] Hyaluronic acid also contains silicon, ranging 350–1,900 μg/g depending on location in the organism. [39]
Dr. Murphy adds to this, saying, “It seems a bit counterintuitive to move through pain and sometimes that is correct, but movement gets synovial fluid moving, which helps the joints loosen up.”
The needle size, length and type should be selected based on the site, depth and patient's body habitus. 22–24G needles are sufficed for most injections. [1] As an example, ultrasound-guided hip joint injection [16] can be considered when symptoms persist despite initial treatment options such as activity modification, analgesia and physical ...