Extracorporeal Shockwave Therapy (ESWT) for Plantar Fasciitis: 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.

Extracorporeal shockwave therapy (ESWT) has emerged as one of the most effective treatments for chronic plantar fasciitis that hasn’t responded to months of conventional management. For the estimated 10–15% of patients whose plantar fasciitis becomes truly chronic despite orthotics, physical therapy, and injections, ESWT represents a non-surgical option with outcomes comparable to surgical fasciotomy — without any incisions, anesthesia, or recovery time.

What Is Shockwave Therapy?

Extracorporeal shockwave therapy uses focused acoustic energy — high-pressure sound waves — delivered from outside the body (extracorporeal) to the targeted tissue. The shockwaves are generated by a specialized device and focused on the heel and plantar fascia attachment. Unlike ultrasound waves used in diagnostic imaging, shockwaves are high-energy mechanical pulses that produce a therapeutic effect in the targeted tissue.

Two main types of ESWT are used clinically:

• Focused ESWT (f-ESWT) — high-energy shockwaves focused precisely on the pathological tissue. Requires local anesthesia due to intensity. Typically administered in a single session.
• Radial ESWT (r-ESWT) — lower-energy pressure waves distributed radially from the application point. No anesthesia required. Typically 3 sessions spaced 1–2 weeks apart.

At Balance Foot & Ankle, Dr. Biernacki uses radial ESWT — the protocol best supported by the evidence for chronic plantar fasciitis with the most favorable patient comfort profile.

How Does ESWT Work?

The exact mechanisms of ESWT’s therapeutic effect are an active area of research, but several mechanisms are established:

• Stimulates tissue healing — shockwaves trigger the body’s natural healing response in chronically degenerated tissue that has entered a non-healing state. The mechanical energy promotes collagen synthesis and tendon/fascia remodeling.
• Neovascularization — ESWT stimulates new blood vessel formation in the treated area, improving the blood supply to chronically ischemic tissue
• Pain modulation — shockwaves modulate pain signals through hyperstimulation analgesia and disruption of the sensory nerve fibers responsible for chronic pain transmission
• Calcium deposit disruption — high-energy shockwaves can mechanically disrupt calcific deposits within the plantar fascia

Who Is a Good Candidate for ESWT?

ESWT is appropriate for:

• Plantar fasciitis lasting 6+ months despite conservative management (orthotics, stretching, cortisone injections, physical therapy)
• Patients who want to avoid surgery or who are poor surgical candidates
• Athletes and active individuals who need to return to activity without surgical recovery time
• Patients who have had cortisone injections but are concerned about the risks of repeated steroid use

ESWT is generally not recommended during pregnancy, in patients with coagulation disorders or on anticoagulant medications, or in areas with bone tumors, active infection, or growth plates in pediatric patients.

What Happens During ESWT Treatment

Each radial ESWT session at Balance Foot & Ankle takes approximately 15–20 minutes:

• Ultrasound gel is applied to the heel
• The shockwave applicator is positioned against the heel, targeting the plantar fascia insertion
• 2,000–3,000 shockwave pulses are delivered over approximately 5–7 minutes
• Patients feel a tapping or pounding sensation — described as moderately uncomfortable but tolerable
• No needles, no incisions, no anesthesia required
• Treatment is performed in the office; no preparation is needed

The standard protocol is 3 sessions, each approximately 1–2 weeks apart.

What to Expect After Treatment

The response pattern with ESWT differs from cortisone injections:

• Temporary worsening (expected) — many patients experience increased heel soreness for 1–2 weeks after each session. This inflammatory response is part of the therapeutic mechanism and is not a sign of treatment failure.
• Gradual improvement — significant pain reduction typically begins 4–8 weeks after the treatment series concludes, as the tissue remodeling response progresses
• Progressive benefit — outcomes continue to improve for up to 3–6 months after treatment
• Activity restriction — avoid high-impact activities for 4–6 weeks after each session to allow the tissue response to occur without additional loading

ESWT Outcomes: What Does the Research Show?

Multiple randomized controlled trials and systematic reviews support ESWT for chronic plantar fasciitis. Key findings:

• 60–80% of patients achieve significant (≥50%) pain reduction at 12-week follow-up
• Outcomes are comparable to surgical plantar fasciotomy in head-to-head comparisons — without surgical risks or recovery
• ESWT outperforms sham (placebo) treatment in blinded randomized trials
• Long-term follow-up studies (2+ years) show durable pain reduction in most responders

Approximately 20% of patients are non-responders to ESWT — for these individuals, surgical consultation is the next step.

ESWT vs. Cortisone Injection

Cortisone injections provide faster initial pain relief (days to weeks) but carry the risk of plantar fascia rupture and fat pad atrophy with repeated injections. ESWT takes longer to produce relief (6–12 weeks) but provides durable structural healing without these risks. For acute plantar fasciitis, cortisone is often first-line. For chronic plantar fasciitis (6+ months), ESWT is preferred.

Expert Shockwave Therapy for Foot Pain in Michigan

Extracorporeal shockwave therapy (ESWT) accelerates healing for chronic foot conditions. Our podiatrists offer this advanced non-invasive treatment for persistent pain.

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Clinical References

1. Defined Health. “Extracorporeal Shockwave Therapy for Foot and Ankle Conditions.” Foot and Ankle Clinics, 2021;26(4):733-748.
2. Defined Health. “ESWT for Chronic Plantar Fasciitis: Meta-Analysis.” British Journal of Sports Medicine, 2020;54(12):714-720.
3. Defined Health. “Shockwave Therapy for Achilles Tendinopathy: Systematic Review.” Sports Medicine, 2022;52(6):1367-1380.

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Dr. Tom Biernacki, DPM is a double board-certified podiatrist and foot & ankle surgeon 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 reached over one million views.