Viscosupplementation

Hyaluronic acid injections add back the natural lube in knee joint fluid for mild to moderate arthritis. This non-steroid option can help you put off knee replacement, at Remix Medical in Houston, TX.

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By Raju Mantena, DO · Pain Medicine PhysicianReviewed Jul 9, 20262 min read

Key takeaways

Viscosupplementation injects hyaluronic acid into the knee to restore the lubricating and shock-absorbing properties of joint fluid — a mechanism distinct from a corticosteroid, which suppresses inflammation.
The evidence is genuinely mixed and contested: some analyses show meaningful benefit in mild-to-moderate disease, while a large 2022 review found no clinically important benefit and a small increase in serious adverse events, and most guidelines conditionally recommend against routine use.
It is most likely to help earlier, mild-to-moderate osteoarthritis and has little role in bone-on-bone knees, where patients should be counseled toward other options.
FDA approval is for the knee; use in other joints is off-label, and it is given as a single injection or a series of three to five weekly injections depending on the product.
It is a reasonable NSAID-sparing option for patients who cannot take anti-inflammatories — including those with chronic kidney disease — but the decision should follow a candid conversation about the odds of benefit.

Viscosupplementation for Knee Arthritis in Houston, Texas

Healthy joint fluid is viscous. It cushions load and lubricates motion, and it owes those properties to hyaluronic acid. In an arthritic knee, the hyaluronic acid is degraded and the fluid becomes thin. Viscosupplementation replaces it.

What is Viscosupplementation?

Viscosupplementation is the injection of hyaluronic acid into the knee joint. It is given either as a single injection or as a series of three to five weekly injections, depending on the preparation used.

Unlike a corticosteroid injection, which suppresses inflammation, viscosupplementation aims to restore the mechanical properties of the joint fluid. The onset is slower and the effect, in patients who respond, tends to last longer.

Stage	What happens
Before	You're positioned, the skin is cleaned and numbed, and live imaging (fluoroscopy or ultrasound) guides the needle
During	The medication is placed precisely at inside the knee joint, adding a lubricating gel; most people feel pressure more than sharp pain
After	You rest briefly and go home the same day — arrange a driver if you received sedation

An Honest Account of the Evidence

Viscosupplementation is one of the more contested interventions in orthopedics. Some large analyses report clinically meaningful benefit in mild-to-moderate knee osteoarthritis; others find effects that do not clear the threshold for clinical importance. Major professional societies differ in their recommendations.

What the evidence supports reasonably well: it is safe, it is best suited to mild-to-moderate disease, and it has little role in bone-on-bone arthritis. Patients with advanced structural change should be counseled toward other options rather than a series of injections that is unlikely to help.

We will tell you where you sit on that spectrum before you commit.

Who It Suits

Mild-to-moderate knee osteoarthritis on weight-bearing X-ray
Patients who cannot tolerate NSAIDs — including those with chronic kidney disease
Patients wanting to defer knee replacement
Patients whose corticosteroid response has become brief or has faded

Considering Your Options at Remix Medical

A candid conversation about what a treatment can and cannot do is worth more than an enthusiastic one.

How it's performed

The knee is cleansed and the skin anesthetized. Under ultrasound guidance where indicated, a needle is placed into the joint space and any effusion is aspirated first, since excess fluid dilutes the injectate. A hyaluronic acid preparation is then injected into the joint. Depending on the product, this is repeated weekly for a total of one to five injections.

How to prepare

No fasting required. You may drive yourself. Disclose any allergy to eggs, poultry, or avian products, as some preparations are avian-derived. Bring recent weight-bearing knee X-rays. Insurance pre-authorization is commonly required and should be confirmed before the first injection.

What to expect after

Ice the knee 20 minutes every 2 to 3 hours for the first day after each injection. Avoid running, prolonged standing, and heavy lifting for 48 hours. Mild swelling or warmth in the first day or two is expected. Complete the full injection series as scheduled. Report a hot, red, acutely swollen knee with fever immediately.

Outcome

In appropriately selected patients with mild-to-moderate knee osteoarthritis, viscosupplementation may reduce pain and improve function for up to six months. Benefit is unlikely in advanced bone-on-bone disease, and patients are counseled accordingly before treatment begins.

Frequently asked

Viscosupplementation questions, answered

How is viscosupplementation different from a steroid shot?

A steroid injection reduces inflammation quickly, while viscosupplement acts more like a lubricant and may take a few weeks to work but can last longer for some people. They serve different roles.

What is viscosupplementation?

It's an injection of a gel-like substance (hyaluronic acid) into the knee to lubricate and cushion the joint. It aims to ease arthritis pain and improve movement.

How long does viscosupplementation last?

Relief often lasts several months, and the course may be repeated. Results vary, and it works best in mild to moderate arthritis alongside exercise.

Who is a good candidate for viscosupplementation?

It's generally used for knee osteoarthritis, especially when steroid injections give only short relief and surgery isn't yet needed. Your doctor helps decide if it fits.

Does viscosupplementation hurt?

You'll feel a pinch and some fullness in the knee. Mild soreness or swelling for a day or two is normal; call for severe swelling, redness, or fever.

Sources

References

Pereira TV, Jüni P, Saadat P, et al. Viscosupplementation for knee osteoarthritis: systematic review and meta-analysis. BMJ 2022;378:e069722 — https://doi.org/10.1136/bmj-2022-069722
Rutjes AW, Jüni P, da Costa BR, et al. Viscosupplementation for osteoarthritis of the knee: a systematic review and meta-analysis. Ann Intern Med 2012;157(3):180–191 — https://doi.org/10.7326/0003-4819-157-3-201208070-00473
Kolasinski SL, Neogi T, Hochberg MC, et al. 2019 American College of Rheumatology/Arthritis Foundation Guideline for the Management of Osteoarthritis of the Hand, Hip, and Knee. Arthritis Care Res 2020;72(2):149–162 — https://doi.org/10.1002/acr.24131
Bannuru RR, Osani MC, Vaysbrot EE, et al. OARSI guidelines for the non-surgical management of knee, hip, and polyarticular osteoarthritis. Osteoarthritis Cartilage 2019;27(11):1578–1589 — https://doi.org/10.1016/j.joca.2019.06.011
American Academy of Orthopaedic Surgeons. Management of Osteoarthritis of the Knee (Non-Arthroplasty), 3rd Edition Clinical Practice Guideline. 2021 — https://www.aaos.org/oak3cpg

SpecialtyPain ManagementTypeProcedureBody locationKnee joint, tibiofemoral joint, synovial fluid, articular cartilageCPT code20610 (injection, major joint, without ultrasound), 20611 (with ultrasound guidance); HCPCS J-codes billed separately for the hyaluronan product administered (e.g. J7318, J7321, J7323, J7325, J7326, J7327 — varies by preparation)

Also called Hyaluronic Acid Injection, Gel Injection, Knee Gel Shot, Hyaluronan Injection, Intra-Articular Hyaluronic Acid

This page is for general education and is not a substitute for medical advice. Whether a given procedure is appropriate depends on your individual evaluation. Contact a Remix Medical clinician to discuss your care.

Updated July 9, 2026. Medically reviewed by Raju Mantena, DO.