PRP vs Steroid & Hyaluronic Acid Injections for Knee Osteoarthritis

Comparing Treatments for Knee Osteoarthritis: PRP vs. Steroids vs. Hyaluronic Acid

Knee osteoarthritis (OA) can be painful and limiting—but fortunately, non-surgical injection options provide relief. Below is a clear comparison of the most common treatments: corticosteroids, hyaluronic acid (HA), and platelet-rich plasma (PRP), highlighting recent evidence that supports PRP’s advantages.

Treatment Options

  • Corticosteroid injections (Steroids)
    These injections act quickly by suppressing inflammation and offering rapid pain relief. However, benefits are typically short-lived—lasting only a few weeks to a few months—and repeated use may carry risks like cartilage damage or other side effects.

  • Hyaluronic acid (HA) injections
    HA is a natural joint lubricant. While approved for treating knee OA, its effectiveness varies: some patients report relief lasting months, others see little benefit. Evidence supporting HA is mixed, with some studies showing little to no improvement over placebo.

  • Platelet‑rich plasma (PRP) injections
    PRP is derived from your own blood and rich in growth factors that may promote tissue healing and reduce inflammation. Preparation varies, but the goal is to concentrate platelets to support natural repair processes.

What Recent Research Shows

A recent 2025 meta-analysis concluded that PRP is more effective than HA for knee OA, demonstrating better scores on pain (VAS), function (WOMAC), and other evaluation measures.

Additional studies reinforce this:

  • Systematic reviews consistently find PRP leads to greater pain relief and functional improvement than HA, both short- and long-term.

  • A 2024 review highlighted that PRP reduced pain more significantly than both HA and steroids, with the most pronounced results occurring around 6 months post-treatment.

  • According to Mayo Clinic data, steroids may provide faster initial relief (within 4–6 weeks), but by 3–6 months, PRP tends to outperform steroids and can deliver benefits lasting 6–12 months or more.

  • A mid‑2025 clinical overview noted that by one year post-injection, patients treated with PRP consistently reported less pain and better function compared to those treated with steroids; while steroids act quickly, they don’t offer lasting improvement like PRP does.

Treatment

Steroids

HA (Gel)

PRP

Speed of Relief

Fast (weeks)

Moderate

Delayed

Duration

Short-term

Variable (~months)

Longer (6-12+ months)

Mechanism

Anti-inflammatory

Lubrication

Healing/repair

Final Thoughts

If you're looking for longer-lasting improvements in pain and function, particularly beyond the short-term window, PRP appears to offer the best evidence for effectiveness compared to both steroid and HA injections.

That said, response to treatment can vary. If quick relief is the main priority, steroids might offer a faster—though brief—benefit. Always consult your healthcare provider to tailor treatment decisions to your specific condition and goals.

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