PRP Injections in Foot and Ankle: Evidence, Indications, and What to Expect

Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Hills, MI. Last updated April 2026.

Platelet-rich plasma (PRP) — an autologous blood concentrate containing 3–8× the baseline platelet concentration, delivering growth factors (PDGF, TGF-beta, VEGF, IGF-1) that stimulate tissue healing — has emerged as an established treatment modality for tendinopathy and fasciopathy in foot and ankle practice. Understanding which conditions have the strongest evidence, which preparations are most effective, and what patients should realistically expect from PRP helps set appropriate treatment expectations.

Evidence by Indication

Plantar fasciitis: the strongest foot and ankle evidence base for PRP. Multiple randomized controlled trials and systematic reviews demonstrate that a single ultrasound-guided PRP injection produces superior pain reduction and functional improvement compared to corticosteroid injection at 3, 6, and 12 months. The PRP advantage over corticosteroid is primarily long-term — at 1 month, corticosteroid may produce faster initial relief, but PRP produces more durable benefit. Achilles tendinopathy (mid-portion): Level II evidence from multiple RCTs demonstrates PRP combined with eccentric exercise produces superior outcomes compared to exercise alone at 6-month follow-up. PRP for insertional Achilles tendinopathy has more limited evidence but is commonly used in combination with ESWT. Ankle OCD: PRP injection into the talar OCD lesion has shown promising early results as adjunct to arthroscopic marrow stimulation in small series. Plantar plate tears and lesser MTP joint synovitis: limited prospective evidence but clinically common practice when conservative management is failing.

Preparation and Procedure

PRP preparation: 30–60mL of venous blood is drawn and centrifuged to separate red cells, white cells, and plasma — the buffy coat plasma fraction is the PRP. Leukocyte-rich PRP (LR-PRP) vs leukocyte-poor PRP (LP-PRP): the inflammatory effect of leukocytes in LR-PRP may be beneficial for tendinopathy but detrimental for intra-articular injection — LP-PRP is preferred for joint injections. Platelet concentration should be >1,000,000 platelets/mL to produce growth factor levels above the therapeutic threshold. Injection under ultrasound guidance is standard of care — ensuring precise delivery to the pathological tissue. Post-injection protocol: activity restriction for 24–48 hours, avoidance of NSAIDs (which reduce platelet activation) for 1–2 weeks, and progressive return to activity over 4–6 weeks. Dr. Biernacki at Balance Foot & Ankle provides in-office ultrasound-guided PRP injections for plantar fasciitis, Achilles tendinopathy, and other foot and ankle tendinopathies. Call (810) 206-1402 at our Bloomfield Hills or Howell office.

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In-Office Treatment at Balance Foot & Ankle

If home care isn’t resolving your your foot or ankle concern, a visit with a board-certified podiatrist is the fastest path to accurate diagnosis and a personalized plan. At Balance Foot & Ankle Specialists, Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin offer same-day and next-day appointments at both our Howell and Bloomfield Hills offices. We perform on-site diagnostic ultrasound, digital X-ray, conservative care, advanced regenerative treatments, and minimally invasive surgery when indicated.

Call (810) 206-1402 or request an appointment online. Most insurance plans accepted, including Medicare, Blue Cross Blue Shield, Aetna, Cigna, and United Healthcare.

Frequently Asked Questions

How do I know if I sprained or broke my ankle?

Both cause pain, swelling, and difficulty walking. Key differences: fractures often cause more immediate severe pain, tenderness directly over bone (not just ligament), and inability to bear any weight. X-rays and the Ottawa Ankle Rules help determine if imaging is needed.

How long does an ankle sprain take to heal?

Grade I (mild): 1–2 weeks. Grade II (moderate): 3–6 weeks. Grade III (complete tear): 2–3 months. Chronic instability from improperly treated sprains can persist and may require surgery.

What is the best treatment for a sprained ankle?

RICE protocol (Rest, Ice, Compression, Elevation) for the first 48–72 hours, followed by protected weight-bearing as tolerated. Physical therapy rehabilitation is critical for high-grade sprains to restore strength and proprioception and prevent chronic instability.

Need Treatment at Balance Foot & Ankle?

Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin see patients at our Howell and Bloomfield Township offices.

Book Online or call (810) 206-1402

Most Common Mistake We See

The most common mistake we see is: Waiting too long before seeking care. Fix: any foot pain lasting more than 4 weeks, or any sudden severe symptom, deserves a professional evaluation rather than more rest.

Warning Signs That Need Same-Day Care

Frequently Asked Questions

When should I see a podiatrist?

If symptoms persist past 2 weeks, affect your normal activity, or are accompanied by red-flag symptoms (warmth, redness, swelling, inability to bear weight).

What does treatment cost?

Most diagnostic visits and conservative treatments are covered by Medicare and major insurers. Out-of-pocket costs vary by your specific plan.

How quickly can I get an appointment?

Most non-urgent cases see us within 5 business days. Urgent cases (sudden pain, possible fracture) typically same or next business day.