Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Hills, MI
Last reviewed: May 2026
| Feature | PRP Injection | Corticosteroid Injection | Hyaluronic Acid (HA) |
|---|---|---|---|
| Mechanism | Concentrated platelets release growth factors (PDGF, TGF-β, VEGF) stimulating tissue repair | Suppresses inflammation; reduces prostaglandins | Lubricates joint; reduces friction; modest anti-inflammatory effect |
| Onset of Relief | 2–6 weeks (slower — healing process) | Days to 1 week (fastest) | 1–4 weeks |
| Duration of Relief | 6–18 months; potentially curative in chronic tendinopathy | 6–12 weeks (fades; repeat injections less effective) | 3–6 months per injection |
| Risk of Tissue Damage | Very low — autologous (own blood); no fat pad atrophy | Fat pad atrophy; tendon weakening with repeat; skin depigmentation | Very low; rare allergic reaction |
| Source | Patient own blood centrifuged to concentrate platelets | Synthetic corticosteroid | Rooster-derived or synthetic hyaluronan |
| Insurance Coverage | Usually not covered — $300–$700 per injection | Usually covered | Some coverage for knee OA; less for ankle |
| Condition | Evidence Level | Success Rate | PRP Protocol | vs. Cortisone |
|---|---|---|---|---|
| Chronic Plantar Fasciitis | Level I (multiple RCTs) | 70–80% pain reduction at 6 months | 1–2 injections, 4 weeks apart | Superior at 3–6 months; cortisone faster but fades |
| Achilles Tendinopathy (mid-portion) | Level II | 65–75% improvement at 6 months | 2–3 injections, 4–6 weeks apart | Comparable or superior long-term; avoids tendon rupture risk of steroid |
| Ankle Osteoarthritis | Level II–III | 60–70% symptom improvement | 2–3 injections, 4 weeks apart | Longer duration than cortisone; no joint degeneration acceleration |
| Peroneal Tendinopathy | Level III | 55–70% improvement | 1–2 injections | Avoids cortisone tendon rupture risk; preferred in high-demand athletes |
| Posterior Tibial Tendinopathy | Level III | 60–70% improvement | 1–2 injections | Emerging evidence; adjunct to orthotics and PT |
Quick answer: Treatment for prp injection foot ankle what it treats follows a stepwise approach: 1) conservative care first (rest, ice, supportive footwear, OTC anti-inflammatories), 2) physical therapy and targeted exercises, 3) in-office treatments (injections, custom orthotics) if conservative fails at 4-6 weeks, 4) surgery for refractory cases. Most patients resolve at step 1 or 2. Call (810) 206-1402.
Medically Reviewed | Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle, Michigan
The most important clinical decision with Prp Injection Foot Ankle What It Treats isn’t which treatment to start with — it’s identifying the correct subtype. That changes everything. Call (810) 206-1402.
The most important clinical decision with Prp Injection Foot Ankle What It Treats isn’t which treatment to start with — it’s identifying the correct subtype. That changes everything. Call (810) 206-1402.
What Is PRP?
Platelet-rich plasma (PRP) is produced by drawing a small amount of the patient’s own blood and processing it through centrifugation to concentrate the platelet layer. Platelets are rich in growth factors — biologically active proteins including PDGF, TGF-β, VEGF, and IGF-1 — that promote tissue repair, collagen synthesis, angiogenesis, and cellular proliferation. When concentrated PRP is injected into damaged tissue, these growth factors deliver a concentrated stimulus for healing in a location where healing has stalled.
Because PRP is derived from the patient’s own blood, allergic reactions and disease transmission risks are eliminated. This distinguishes it from corticosteroids (risk of tissue weakening, immune suppression) and from biologic medications (risk of systemic effects).
What PRP Treats in the Foot and Ankle
Plantar fasciitis: The most common foot indication for PRP. In chronic plantar fasciitis (fasciosis), the plantar fascia shows degenerative changes rather than active inflammation. PRP provides a direct healing stimulus. Evidence from multiple randomized trials supports PRP’s effectiveness in chronic plantar fasciitis, particularly in cases that haven’t responded to cortisone injection.
Achilles tendinopathy: Both insertional and non-insertional tendinopathy can benefit from PRP injection. The tendon’s relatively poor blood supply makes PRP’s angiogenic properties particularly relevant. Used in combination with eccentric exercise protocol for best outcomes.
Ankle osteoarthritis: Intra-articular PRP injections for early-to-moderate ankle arthritis show promising results for pain reduction and functional improvement. A disease-modifying effect (slowing cartilage loss) is supported by some evidence.
Ligament and tendon injuries: Ankle ligament sprains (chronic instability), peroneal tendinopathy, and posterior tibial tendon dysfunction can benefit from PRP in conjunction with rehabilitation.
The Procedure
Blood is drawn (typically 15-30 mL depending on the kit used), processed in a centrifuge for 8-15 minutes to concentrate the platelet layer, and the resulting PRP is injected precisely into the target tissue. Ultrasound guidance improves accuracy for tendon and fascial injections. The procedure is well-tolerated with local anesthetic for the injection site.
Most protocols involve 1-3 injections spaced 4-6 weeks apart. Avoiding NSAIDs for 1-2 weeks around the procedure maximizes platelet activity.
What to Expect
PRP results are not immediate — the growth factors stimulate biological repair processes that take weeks to months to complete. Expect 4-8 weeks before seeing meaningful improvement, with continued improvement up to 12 weeks post-injection. This slower onset contrasts with cortisone (rapid relief but often temporary) and reflects the underlying tissue repair mechanism rather than anti-inflammatory suppression.
Insurance and Cost
PRP injections for musculoskeletal indications are generally not covered by insurance and are self-pay. Costs vary by location and kit. The investment is justified for patients who have failed standard care and want to avoid surgery — call our office for current pricing.
Dr. Tom's Product Recommendations
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Plantar fasciitis PRP recovery, Achilles tendinopathy support, arch loading reduction
Custom orthotics preferred for patients with significant underlying biomechanical issues
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✅ Pros / Benefits
- PRP from patient’s own blood — no rejection risk, no disease transmission
- Stimulates actual tissue healing rather than just suppressing inflammation (unlike cortisone)
- Ankle arthritis PRP — disease-modifying potential in addition to pain relief
❌ Cons / Risks
- PRP results take 4-12 weeks to develop — no immediate relief
- Not covered by insurance for most indications — self-pay cost commitment
- Results are variable — roughly 70-80% of plantar fasciitis cases respond, with individual variation
Dr. Tom Biernacki’s Recommendation
PRP is the right tool for the right patient — someone with chronic plantar fasciitis or Achilles tendinopathy that has failed conservative care, wants to avoid surgery, and understands that the healing response takes time. I always set clear expectations before doing PRP: don’t expect to feel dramatically better the next day — the growth factors are starting a biological repair process that takes weeks. Patients who understand this and comply with continued rehab and orthotics during the recovery period have excellent outcomes.
— Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle
Frequently Asked Questions
Is PRP better than cortisone for plantar fasciitis?
For acute, newly-onset plantar fasciitis, cortisone provides faster relief. For chronic plantar fasciitis (6+ months), PRP produces better durable outcomes because it addresses the underlying degenerative tissue rather than just suppressing inflammation.
How long does PRP injection relief last?
Clinical studies show PRP benefits persisting at 12-24 months in the majority of responders, significantly longer than cortisone injections. Long-term durability depends on addressing underlying biomechanical causes as well.
Is PRP covered by insurance?
Generally no — PRP for musculoskeletal indications is typically considered experimental by most insurers and is self-pay. Call our office for current pricing.
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In-Office Treatment at Balance Foot & Ankle
If home treatment isn’t providing relief for your prp injection foot ankle what it treats, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.
NCBI: PRP Injections for Foot & Ankle Conditions
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Dr. Tom Biernacki, DPM is a board-certified foot & ankle surgeon (ABFAS & ABPM) at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has made him one of the most-followed foot & ankle educators on YouTube.