About Hyaluronic Acid (Gel) Injections
Healthy joint fluid is slippery and thick because it contains hyaluronic acid. In arthritis that fluid becomes thinner and less protective. A hyaluronic acid injection places a purified form of the same substance inside the joint to help it glide and absorb load more comfortably.
Hyaluronic acid injections are FDA-approved for osteoarthritis of the knee, and that is where we use them most. Physicians sometimes use hyaluronic acid in other joints, such as the shoulder; if we discuss it for a joint other than the knee, we explain the evidence, how it is typically billed, and the alternatives, such as PRP or a cortisone injection.
Gel injections tend to work more slowly than cortisone but can last longer for people who respond. They are most useful for mild to moderate arthritis, where there is still joint space to cushion. They do not rebuild cartilage or reverse arthritis.
Where we use Hyaluronic Acid
What happens during treatment
- 1.
Your physician reviews your history, examines the joint, and uses ultrasound and your X-rays to confirm the stage of arthritis.
- 2.
If the joint is swollen, extra fluid may be drawn off first to relieve pressure and make room for the injection.
- 3.
Under live ultrasound, the hyaluronic acid is placed inside the joint. Depending on the product, this is one injection or a short weekly series.
- 4.
You return to light daily activity the same day and continue a strength program for the muscles that support the joint.
Who may be a good candidate
- People with mild to moderate knee osteoarthritis whose pain limits walking, stairs, or sport.
- People who had little or short-lived relief from cortisone, or who want to limit steroid use.
- People with diabetes who prefer to avoid the blood sugar rise that cortisone can cause.
- People who want to stay active and delay joint replacement while they strengthen.
Recovery
Most people walk out and return to daily activity the same day, with a day or two of lighter exercise. The joint can feel full or achy for a couple of days. Any benefit usually builds over several weeks, and some people repeat a course when pain returns months later.
Risks and limits
Side effects are usually mild: temporary pain, swelling, or warmth in the joint. A rare inflammatory reaction or infection can occur. Hyaluronic acid does not help everyone and is less likely to help advanced, bone-on-bone arthritis. It does not repair or regrow cartilage.
What to expect at your visit
- 1.
We listen first
Your visit opens with a real conversation: how the problem started, what you have already tried, and the activity you want back.
- 2.
Exam and in-office ultrasound
A hands-on exam, then ultrasound at the exam table, often while you move, so your physician can see the tendon, joint, or nerve involved.
- 3.
A clear diagnosis and plan
You leave knowing what is wrong and what your options are, from strength-based rehab to procedures, and why we recommend each one.
- 4.
Treatment and follow-through
Most procedures happen here in the office. We coordinate with your physical therapist and check progress against the goals you set.
Clinical evidence
Published studies our physicians draw on. Results in studies do not predict any one person's outcome.
Questions about Hyaluronic Acid
- Is hyaluronic acid covered by insurance?
- For knee osteoarthritis, many plans, including Medicare, cover hyaluronic acid after other treatments have been tried, sometimes with prior approval. For other joints coverage differs, and we review costs with you before any injection.
- Is a gel injection better than a cortisone shot?
- They do different jobs. Cortisone calms inflammation quickly but wears off; hyaluronic acid works more slowly and can last longer for people who respond. Your physician recommends one based on your X-rays, ultrasound, and past results.
- Can hyaluronic acid be used in the shoulder?
- Physicians sometimes use it for shoulder arthritis, but its FDA approval is for the knee. If it comes up for your shoulder, we go over the evidence, cost, and alternatives such as PRP or cortisone so you can decide together with your physician.