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Euflexxa
Euflexxa vs Orthovisc – Which is Better for OA?
Oct 11, 2024
Viscosupplementation is a common treatment for knee osteoarthritis (OA) that involves injecting hyaluronic acid into the joint to improve lubrication and relieve pain. Studies have shown that this non-surgical option can effectively reduce symptoms, allowing patients to manage OA without invasive procedures.
Two popular viscosupplements are Euflexxa and Orthovisc. Both are hyaluronic acid-based treatments designed to enhance joint function and reduce pain in patients with osteoarthritis. However, their formulations and effectiveness vary, leading many patients and healthcare providers to wonder which option is better suited for their needs.
In this article, we will compare Euflexxa vs Orthovisc, examining their benefits, differences, and potential side effects to help you make an informed decision.
Key Takeaways
- Euflexxa and Orthovisc are both hyaluronic acid-based injections used to treat knee osteoarthritis. They improve joint lubrication and reduce pain.
- Euflexxa is derived from bacterial fermentation, while Orthovisc is sourced from rooster combs, which may be a consideration for patients with allergies or preferences.
- Research suggests that Orthovisc may provide superior pain relief, though individual results may vary.
- Euflexxa typically requires three injections over three weeks, while Orthovisc may involve three to four injections depending on patient needs.
- Both treatments can have side effects, such as swelling, joint stiffness, or pain at the injection site, but these are usually temporary.
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Understanding Euflexxa and Orthovisc
Euflexxa and Orthovisc are viscosupplement injections designed to relieve knee pain caused by osteoarthritis. Both treatments contain hyaluronic acid, a naturally occurring substance in the joint fluid that acts as a lubricant and shock absorber, helping to cushion the knee joint and reduce pain. However, they differ in their formulations.

Euflexxa is produced from bacterial fermentation, while Orthovisc is derived from the rooster comb of chickens. Furthermore, Orthovisc has a lower molecular weight than Euflexxa, which could affect the duration of pain relief. However, studies suggest that Orthovisc may offer better overall pain reduction despite its molecular weight.
In terms of administration, the typical Euflexxa dosage is a single injection of 2 mL (10 mg/mL), usually done once a week for 3 to 5 weeks. In comparison, Orthovisc requires three or four injections over several weeks, depending on the patient’s needs. Each treatment schedule aims to provide long-term relief from osteoarthritis symptoms.
Effectiveness in Treating Osteoarthritis
Research on the effectiveness of Euflexxa and Orthovisc for treating osteoarthritis has yielded precise results. Patients report feeling better, and studies like the ones below support these claims.

One multicenter, randomized, double-blind study involving 321 patients with chronic knee osteoarthritis found that Euflexxa provided significant pain relief and improved joint function over 12 weeks.
Another randomized controlled trial compared Orthovisc to a placebo in knee osteoarthritis patients. The results showed that Orthovisc significantly reduced pain and enhanced joint function compared to the placebo.
Doctors use these findings to determine the best treatment options. Understanding each treatment’s source, cost, and pain-relief effects is essential.
Patient Reviews and Experiences
People often talk about how these treatments help with knee pain and mobility. Reading patient reviews can provide valuable insights into their experiences, helping you make a more informed decision about your treatment options.
On Euflexxa
- Steph2023:” I’m bone on bone and have so many issues.. pain with my knees. It’s hard to ambulate some days without crutches..my knee pops constantly and gets stiff. I can’t do stairs. After I get my injections, my knee feels “normal,” which lasts 6 months to a year for me! Best decision ever!! Euflexxa is a good choice!”
On Orthovisc:
- Jennifer:” At 49, my knee pain was so bad that I thought life was over. I tried physical therapy and cortisone and was told there was nothing left to do. I got a 2nd opinion, and my new doctor recommended Orthovisc. I could not be happier with the results!!!!! Pain-free almost immediately and going on 4 months pain-free!”
The choice between them may come down to individual reactions and preferences rather than clear-cut effectiveness alone.
Comparing Side Effects
While they can effectively improve mobility and reduce pain, it’s essential to be aware of potential side effects. Common side effects include:

- Joint Discomfort: Patients often experience soreness in the treated joint after the injection.
- Stiffness: Some individuals may feel stiffness in the knees or joints.
- Swelling: Puffiness around the injection site is common and can cause temporary discomfort.
- Discoloration: There may be noticeable discoloration at the injection site.
- Headaches: A small percentage of patients report headaches following treatment.
- Skin Reactions: Itchiness or a rash can occur near the injection area.
- Nausea: Some individuals may experience feelings of sickness.
- Muscle Soreness: Tenderness in the muscles surrounding the injection site can occur.
While these side effects are typically mild and temporary, patients should communicate concerns with their healthcare provider for appropriate management and support. Understanding these potential effects can enhance the overall treatment experience.
Choosing the Right Viscosupplement for You
Deciding between Euflexxa and Orthovisc for managing osteoarthritis can be challenging. Several factors can help guide your decision:
- Source of Ingredients: Euflexxa is made from bacterial-derived hyaluronic acid, while Orthovisc is derived from rooster combs. This may be important to patients with specific sensitivities or preferences.
- Molecular Weight: Euflexxa has a slightly higher molecular weight than Orthovisc, which might impact the duration of pain relief. However, some studies suggest that Orthovisc may provide greater overall pain reduction.
- Pain Relief: Research indicates that while both treatments are effective, Orthovisc may offer superior pain relief for certain patients.
- Treatment Schedule: Euflexxa typically requires three injections over three weeks, while Orthovisc may involve three to four injections. Consider your availability for follow-up appointments.
- Side Effects: Both injections have similar side effects, such as pain or swelling at the injection site. Understanding these risks can help manage expectations.
- Cost: Consider the cost difference between Euflexxa vs Orthovisc, and check what your insurance plan covers.
Conclusion
Both Euflexxa and Orthovisc are effective options for treating knee pain caused by osteoarthritis. While Euflexxa is derived from bacterial sources and Orthovisc from rooster combs, their choice often comes down to personal preferences and specific needs. Some studies suggest that Orthovisc may offer greater pain relief, but both treatments provide significant benefits.
Consulting with your doctor is essential to determine which option aligns best with your condition and treatment goals.
FAQs
1. What is the main difference between Euflexxa and Orthovisc?
The main difference lies in their sourcing. Euflexxa is produced through bacterial fermentation, while Orthovisc is derived from rooster combs. This may be a factor for individuals with certain allergies or preferences.
2. Which treatment is more cost-effective, Euflexxa or Orthovisc?
Costs vary depending on location, insurance coverage, and individual treatment needs. It’s essential to consult with your healthcare provider and insurance company to determine the most cost-effective option for you.
3. Can Euflexxa and Orthovisc delay knee surgery?
Yes, both treatments can potentially delay the need for knee replacement surgery by providing significant pain relief and improving joint function in patients with knee osteoarthritis.
References
Viscosupplementation for knee arthritis. American Academy of Orthopaedic Surgeons. https://orthoinfo.aaos.org/en/treatment/viscosupplementation-treatment-for-knee-arthritis/
Pereira TV, Jüni P, Saadat P, et al. Viscosupplementation for knee osteoarthritis: systematic review and meta-analysis. BMJ. Published online July 6, 2022:e069722. doi:https://doi.org/10.1136/bmj-2022-069722
National Institute of Arthritis and Musculoskeletal and Skin Diseases. Osteoarthritis. National Institute of Arthritis and Musculoskeletal and Skin Diseases. Published September 2023. https://www.niams.nih.gov/health-topics/osteoarthritis