A knee gel injection — also called hyaluronic acid viscosupplementation — places a lubricating gel directly into the knee joint to ease the pain and stiffness of knee osteoarthritis. The gel mimics the natural fluid that cushions a healthy knee, restoring smoother movement and reducing bone-on-bone friction. Dr. Imran Qureshi performs gel injections under ultrasound guidance at his Katy, TX office. Unlike PRP, hyaluronic acid is FDA-approved for knee arthritis and covered by most insurance plans and Medicare. Relief builds over 2 to 4 weeks and can last up to 6 months, making it a popular option for patients who want to delay or avoid knee replacement.
What is a knee gel injection?
A knee gel injection delivers hyaluronic acid — a thick, lubricating substance that occurs naturally in healthy joint fluid — directly into the knee. In osteoarthritis, the knee's natural hyaluronic acid breaks down and thins, so the joint loses its cushioning and the bones grind with movement. Osteoarthritis affects more than 32 million U.S. adults and the knee is the most commonly affected joint. Supplementing the joint with gel restores lubrication and shock absorption, which reduces pain and improves how the knee moves.
The treatment is also called viscosupplementation, and it is FDA-approved specifically for knee osteoarthritis. Dr. Qureshi performs every gel injection under ultrasound guidance to confirm the needle is inside the joint space before the gel is delivered.
What conditions does a knee gel injection treat?
Hyaluronic acid gel injections are used primarily for:
- Knee osteoarthritis — the main indication, especially mild-to-moderate arthritis with pain, stiffness, and reduced cushioning
- Knee pain that flares with activity — aching after walking, stairs, or standing that limits daily function
- Patients who can't use repeated cortisone — for example, those with diabetes where steroids raise blood sugar
- Patients wanting to delay knee replacement — gel injections can buy time and relief for those not ready for, or wanting to avoid, surgery
- Knee arthritis that no longer responds well to cortisone — a different mechanism that may help when steroids stop working
See our full knee pain and arthritis overview for all of the treatment options Dr. Qureshi offers for the knee.
How does a gel injection compare to other knee treatments?
The knee has several injection options, each with a different role:
- Hyaluronic acid (gel) — restores lubrication. Slower onset (2–4 weeks) but longer-lasting (up to 6 months), insurance-covered, and no cartilage concerns with repetition. Best for mild-to-moderate arthritis.
- Corticosteroid (cortisone) — reduces inflammation fast (days) but shorter-lasting (weeks to a few months) and limited to 3–4 per knee per year. Good for acute flares.
- PRP (platelet-rich plasma) — uses your own concentrated platelets to target the arthritis biologically. Self-pay, but research shows it can outperform cortisone for knee OA pain relief.
- Genicular nerve procedures — target the nerves carrying knee pain signals; an option for advanced arthritis or when injections stop working.
Dr. Qureshi will help you decide which option — or combination — fits your knee, your insurance, and your goals.
What happens during a knee gel injection?
The procedure is quick, done in the office, and well-tolerated:
- Positioning: You lie back with the knee slightly bent and supported.
- Skin prep and numbing: The injection site is cleaned and numbed with local anesthetic.
- Ultrasound guidance: Dr. Qureshi uses ultrasound to confirm the needle is inside the joint space before delivering the gel — accuracy matters, because gel placed outside the joint will not work.
- Fluid removal if needed: If the knee is swollen with excess fluid, Dr. Qureshi may drain it first, which itself often relieves pressure.
- Gel delivery: The hyaluronic acid is injected into the joint. The injection itself takes under a minute.
- Walk out: No monitored recovery is needed. Most patients drive themselves home.
Is a gel injection one shot or a series?
It depends on the specific product. Some hyaluronic acid products are formulated as a single injection, while others are given as a series of 3 to 5 injections spaced about a week apart. Both approaches deliver a similar total dose and similar results — the difference is the schedule. Dr. Qureshi selects the product based on your knee, your insurance coverage, and your preference, and explains the plan before you begin.
Recovery and timeline
- First 48 hours: Avoid strenuous activity, prolonged standing, and high-impact exercise. Ice 15 minutes, 2–3 times if sore. Light daily walking is fine.
- Week 1: Some patients feel mild fullness or soreness in the knee. The gel is beginning to coat the joint.
- Weeks 2–4: Pain relief builds gradually as lubrication is restored. This is normal — gel does not work like a fast steroid.
- Up to 6 months: Most patients reach full benefit and maintain it for several months. The course can be repeated about every 6 months as needed.
Am I a candidate for a knee gel injection?
You may be a good candidate if you have:
- X-ray-confirmed mild-to-moderate knee osteoarthritis
- Knee pain that limits walking, stairs, work, or sleep
- Incomplete or short-lived relief from anti-inflammatories and physical therapy
- A desire to delay or avoid knee replacement surgery
- A reason to avoid repeated cortisone (such as diabetes)
Gel injections are less predictable for end-stage, bone-on-bone arthritis, and are avoided in the setting of active knee infection, skin infection over the injection site, or known allergy to hyaluronic acid products (some are derived from avian sources). Dr. Qureshi reviews your X-rays and history before recommending the treatment.
What are the risks and side effects of a knee gel injection?
Hyaluronic acid knee injections are very safe and well-tolerated. Possible side effects:
- Temporary knee soreness, swelling, or warmth: Usually mild and resolves within a couple of days
- A local inflammatory reaction to the gel: Uncommon; settles with ice and rest
- Injection-site pain: Brief, from the needle itself
- Allergic reaction: Rare; mention any allergy to eggs or avian products, as some gels are avian-derived
- Infection: Very rare with proper sterile technique and ultrasound guidance
Gel injection vs. knee replacement: which makes sense first?
For mild-to-moderate knee arthritis, conservative care — including gel injections, physical therapy, and weight management — is the right first step, and many patients get years of meaningful relief before surgery is ever needed. Knee replacement is reserved for end-stage, bone-on-bone arthritis with persistent pain and loss of function despite conservative treatment. Gel injections are one of the tools that can safely delay surgery while keeping you active. Dr. Qureshi will tell you honestly when injections are no longer enough and a surgical consult is the right next step.
Why choose Dr. Qureshi for knee gel injections in Katy, TX?
Dr. Imran Qureshi is a board-certified interventional pain management and sports medicine physician who has performed thousands of image-guided joint injections. He uses ultrasound guidance on every knee gel injection — confirming the gel reaches the joint space, which not all clinics do — to maximize both relief and safety. The Katy office offers same-week appointments, accepts most major insurance plans, and serves patients from Cinco Ranch, Cypress, Fulshear, Richmond, and Sugar Land.