Knee Gel Injection Brand Comparison: All 17 Brands Rated (2026)

The Complete 2026 Guide to Knee Gel Injection Brands

If your doctor recommends hyaluronic acid (HA) knee injections — also called gel shots or viscosupplementation — you may be surprised to learn that more than a dozen brands are available. They differ in injection count, molecular weight, source material, and price. Choosing the wrong one for your situation can mean unnecessary shots, an allergic reaction risk, or an insurance denial you could have avoided.

This guide covers all 17 FDA-approved (or clinically available) brands in a single reference table, with a decision matrix to help you find the best fit.

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How Gel Injections Work

Knee osteoarthritis gradually degrades the hyaluronic acid naturally present in your synovial (joint) fluid. This fluid acts as both a lubricant and a shock absorber. HA injections replenish this fluid — reducing friction, cushioning impact, and often relieving pain for months.

The key differences between brands come down to:

• Number of injections (1 shot vs. a 3–5 shot series)
• Source (avian/rooster-derived vs. non-avian/bacterial fermentation)
• Molecular weight (affects viscosity and longevity)
• HCPCS billing code (determines Medicare reimbursement)
• Price (self-pay vs. with insurance)

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Full 17-Brand Comparison Table

Brand	Manufacturer	# Injections	Volume	Source	Bird Allergy Safe	Medicare	Self-Pay Cost Range
Synvisc	Sanofi	3 weekly	2mL	Avian	❌ No	✅ J7325	$900–$1,400
Synvisc-One	Sanofi	1	6mL	Avian	❌ No	✅ J7325	$800–$1,200
Euflexxa	Ferring	3 weekly	2mL	Non-avian	✅ Yes	✅ J7323	$600–$900
Orthovisc	Anika Therapeutics	3–4 weekly	2mL	Non-avian	✅ Yes	✅ J7324	$700–$1,000
Monovisc	Anika Therapeutics	1	4mL	Non-avian	✅ Yes	✅ J7327	$700–$1,100
Durolane	Bioventus	1	3mL	Non-avian	✅ Yes	✅ J7318	$900–$1,300
Gel-One	Zimmer Biomet	1	3mL	Avian	❌ No	✅ J7326	$700–$1,000
GELSYN-3	Bioventus	3 weekly	2mL	Non-avian	✅ Yes	✅ J7328	$500–$800
Supartz FX	Bioventus	3–5 weekly	2.5mL	Avian	❌ No	✅ J7321	$600–$900
Hyalgan	Fidia Pharma USA	3–5 weekly	2mL	Avian	❌ No	✅ J7321	$500–$900
Visco-3	Zimmer Biomet	3 weekly	2mL	Avian	❌ No	✅ J7321	$500–$800
Triluron	Fidia Pharma USA	3 weekly	2mL	Avian	❌ No	✅ J7332	$500–$750
GenVisc 850	OrthogenRx	5 weekly	2mL	Non-avian	✅ Yes	✅ J7320	$400–$700
Hymovis	Fidia	2 weekly	3mL	Non-avian	✅ Yes	✅ J7322	$600–$900
SynoJoynt	Teva Pharmaceuticals USA	3 weekly	2mL	Not disclosed	⚠️ Confirm with provider	✅ J7331	$500–$800
TriVisc	OrthogenRx (Avanos)	3 weekly	2mL	Non-avian	✅ Yes	✅ J7329	$500–$750
Arthrosamid	Contura	1	6mL	Synthetic (polyacrylamide)	✅ Yes	❌ Not yet covered	$3,000–$6,000

Cost ranges reflect self-pay per treatment course. Medicare Part B covers most HA brands; patient pays 20% after deductible.

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Decision Matrix: “Best for Patients Who…”

If you…	Best Brand Option	Why
Have a bird, feather, or egg allergy	Euflexxa or Durolane	Non-avian (bacterial fermentation); no animal-derived HA
Want single-injection convenience	Synvisc-One, Monovisc, Durolane, or Gel-One	One-and-done visit; useful for busy patients
Want the longest-lasting single shot	Durolane	High-density NASHA formulation; some studies show 6–12 month relief
Are on Medicare Part B	Any brand except Arthrosamid	All traditional HA brands are covered; confirm HCPCS with provider
Have been denied and need to appeal	Euflexxa	Often preferred by insurers in appeal pathways; non-avian source adds medical rationale
Want the most affordable self-pay option	GenVisc 850 or GELSYN-3	Lower cost tiers with solid efficacy data
Are in a step-therapy protocol	Hyalgan or Supartz FX	Frequently listed as first-line preferred brands in step therapy
Can’t return for multiple visits	Single-injection brands (above)	Reduces total clinic visits from 3–5 to 1

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Avian vs. Non-Avian: Does It Matter?

Avian-sourced HA is derived from rooster combs and has been used for decades — it’s safe for the vast majority of patients. However, patients with:

• Bird allergies
• Feather/down allergies
• Egg allergies (some overlap)

…should choose non-avian brands. The non-avian brands (Euflexxa, Durolane, GELSYN-3, GenVisc 850, Hymovis, Monovisc, Orthovisc, Trivisc) produce HA through bacterial fermentation — biologically identical to avian HA but without the rooster-derived proteins that can trigger reactions. (SynoJoynt’s HA source is not disclosed in FDA labeling; patients with bird/egg allergy should confirm with their provider before use.)

If you’re unsure: Ask your prescribing physician before your injection. A brief allergy history takes 2 minutes and can prevent a pseudoseptic reaction.

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Single Injection vs. Series: Which Is Better?

Neither is universally superior — the right choice depends on your lifestyle, insurance, and physician preference.

Single-injection advantages:

• One visit, one copay
• Less disruption to work or schedule
• Good efficacy data (non-inferior to series in most trials)

Series advantages:

• More flexibility — multiple smaller doses allow dose adjustment
• Often preferred brands in step-therapy protocols
• Lower per-unit cost (though more copays)

Research note: A 2022 meta-analysis in JBJS found single-injection and 3-injection series showed comparable 26-week outcomes for pain and function. Neither was consistently superior.

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Medicare Coverage: How It Works

Medicare Part B (outpatient medical) covers HA injections when:

1. You have a confirmed diagnosis of knee osteoarthritis (ICD-10: M17.x)
2. Conservative treatments have been documented (PT, oral medications)
3. The procedure is performed in a physician’s office (billed under HCPCS)

What you pay: 20% coinsurance after your Part B deductible ($240 in 2024). With a Medigap supplement, you may owe nothing.

Step therapy: Some Medicare Advantage plans require you to try specific brands before approving others. Know your plan before the appointment.

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Internal Brand Pages

For detailed information on individual brands:

• Synvisc-One — single shot, avian
• Euflexxa — 3-shot, non-avian, bird-allergy safe
• Durolane — single shot, non-avian, longest duration
• Orthovisc — 3–4 shot series
• Monovisc — single shot, non-avian, bird-allergy safe
• Hyalgan — 3–5 shot series, widely covered
• Supartz FX — 3–5 shots, Bioventus
• GELSYN-3 — 3-shot, non-avian, Bioventus
• Gel-One — single shot
• GenVisc 850 — 5-shot, cost-effective

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Frequently Asked Questions

Which knee gel injection brand is most effective?

No single brand is definitively superior — head-to-head trials generally show comparable efficacy across brands within the same treatment course length. Your best brand is determined by your allergy history, insurance coverage, and preference for single vs. series injection.

Does Medicare cover all gel injection brands?

Medicare Part B covers all traditional HA brands (Synvisc, Euflexxa, Durolane, Orthovisc, Monovisc, and others) when medically indicated. Arthrosamid is not yet covered. Check your specific Medicare Advantage plan for preferred brand requirements.

Can I switch brands between injection courses?

Yes — switching brands between courses is common, often based on insurance changes, physician preference, or patient response. Your synovial fluid doesn’t “remember” the previous brand.

What if my insurance denies my gel injection?

Request a prior authorization or appeal, citing your OA diagnosis documentation, failed conservative treatment, and the specific medical necessity criteria in your plan’s policy. Euflexxa often has the best success rate in appeals due to its preferred formulary status with many insurers.

Is Arthrosamid better than regular gel shots?

Arthrosamid (polyacrylamide hydrogel) uses a different mechanism than HA — it’s a permanent filler rather than a lubricant. Early European data shows promising long-term results, but it’s not yet FDA-approved or Medicare-covered in the US. Cost ($3,000–$6,000 out of pocket) puts it out of reach for most patients.