Shockwave therapy device used for medical treatment

Radial vs Focused Shockwave Therapy: What's the Difference?

April 11, 2023 Updated November 30, 2024 8 min read

If you’ve been researching shockwave therapy for ED, neuropathy, or soft tissue pain, you’ve probably noticed something confusing: different clinics seem to offer very different treatments, all called “shockwave therapy.”

Some use terms like “acoustic wave therapy,” “pressure wave therapy,” or just “shockwave.” Prices vary wildly. And results seem inconsistent.

Here’s the thing: not all shockwave devices are the same, and understanding the difference can save you time, money, and disappointment.

The Two Main Types of Shockwave

All shockwave therapy uses acoustic energy (sound waves) to stimulate tissue healing. But how that energy is generated and delivered varies significantly.

Radial Shockwaves (Pressure Waves)

Radial shockwave devices generate waves that spread outward from the applicator tip, similar to ripples spreading from a stone dropped in water.

How they work:

  • A projectile inside the handpiece strikes an applicator
  • This creates a pressure wave that spreads into tissue
  • Energy disperses rapidly as waves travel outward
  • Maximum intensity is at the skin surface

Characteristics:

  • Lower peak pressure (typically 1-10 MPa)
  • Shallower penetration (effective up to ~3-4 cm)
  • Energy spreads and weakens with depth
  • Less precise targeting
  • Lower cost devices ($5,000-$30,000)

Best suited for:

  • Superficial conditions
  • Large treatment areas
  • Muscle trigger points
  • Some tendon conditions near the surface

Focused Shockwaves (True ESWT)

Focused shockwave devices concentrate acoustic energy at a specific point inside the body, similar to how a magnifying glass focuses sunlight.

How they work:

  • Electromagnetic, electrohydraulic, or piezoelectric generators create waves
  • A lens or reflector focuses the waves to converge at a precise depth
  • Maximum energy is delivered at the focal point, not the surface
  • Depth can be adjusted to target specific structures

Characteristics:

  • Higher peak pressure (10-100+ MPa at focal point)
  • Deeper effective penetration (up to 12+ cm)
  • Energy concentrated where needed
  • Precise depth targeting
  • Higher cost devices ($50,000-$150,000+)

Best suited for:

  • Deep tissue conditions
  • Targeted treatment of specific structures
  • ED treatment (reaching penile vasculature)
  • Conditions requiring higher energy density

Why This Matters for ED Treatment

For shockwave therapy for erectile dysfunction , the type of device matters more than you might think.

The Goal: Trigger Angiogenesis

Shockwave therapy for ED works by triggering angiogenesis—the formation of new blood vessels. This requires:

  1. Sufficient energy delivered to penile tissue
  2. Reaching the blood vessels deep in the corpora cavernosa
  3. Stimulating the right biological cascade

Why Focused Matters for ED

The blood vessels and tissue we’re trying to stimulate in ED treatment aren’t at the surface—they’re deep inside the penis. The corpora cavernosa (erectile tissue) requires adequate energy delivery to trigger the healing response.

Research consideration: The clinical studies showing significant benefit for ED primarily used focused shockwave devices. The landmark studies published in The Journal of Urology and European Urology used focused technology.

While some radial device manufacturers claim comparable results, the peer-reviewed research base is substantially stronger for focused shockwave in ED treatment.

The Marketing Problem

Here’s where it gets tricky: many clinics market radial devices using terms like:

  • “Acoustic wave therapy”
  • “Pressure wave therapy”
  • “Soundwave therapy”
  • “GAINSWave” (franchise using various devices)
  • Generic “shockwave therapy”

These terms don’t specify which type of shockwave is being used. A clinic might be using a $15,000 radial device or a $100,000 focused device—both could be called “shockwave therapy.”

Questions to ask any clinic:

  1. What specific device do you use? (Get the brand and model)
  2. Is it a focused or radial shockwave device?
  3. What energy levels and treatment protocols do you follow?
  4. Can you point to research using your specific device type?

Other Conditions: Which Type Works Better?

Plantar Fasciitis

Both radial and focused can be effective. The plantar fascia is relatively accessible, and radial waves may be sufficient for many cases. However, focused may provide faster results for chronic, stubborn cases.

Tennis Elbow / Lateral Epicondylitis

Similar to plantar fasciitis—both types can work. Some practitioners prefer radial for this application due to the broader treatment area.

Neuropathy

For peripheral neuropathy, especially in the feet, focused shockwave may offer advantages when treating deeper nerve structures. However, both types have shown some benefit in studies.

Cellulite

Radial shockwave is commonly used for cellulite treatment, as the connective tissue bands being targeted are relatively superficial. This is one application where radial devices may be perfectly appropriate.

Chronic Pain / Myofascial Trigger Points

Radial shockwave is often effective for superficial muscle trigger points. Focused may be preferred for deeper structures or more stubborn chronic pain.

Device Technology: A Deeper Look

Focused Shockwave Generation Methods

Electrohydraulic:

  • Original technology (used in kidney stone treatment)
  • Spark gap in water creates shockwave
  • Reflector focuses the wave
  • High energy capability
  • Less precise focal zone

Electromagnetic:

  • Electromagnetic coil moves a membrane
  • Creates shockwave focused by acoustic lens
  • Very consistent energy delivery
  • Moderate focal zone precision
  • Most common in modern focused devices

Piezoelectric:

  • Ceramic crystals arranged in a mosaic
  • Precise control of focal zone
  • Lower maximum energy
  • Excellent for smaller treatment areas
  • Often used in urology applications

Why Device Quality Varies

The technology to generate true focused shockwaves is expensive and complex. This is why:

  • Medical-grade focused devices: $50,000 - $150,000+
  • Quality radial devices: $15,000 - $50,000
  • Low-end “acoustic wave” devices: $3,000 - $15,000

Some clinics cut costs by using less expensive equipment. This isn’t necessarily wrong for all applications, but patients should understand what they’re getting.

What We Use and Why

At Multnomah Medical Clinic, we use Storz Medical focused shockwave devices—the same technology used in the peer-reviewed clinical trials that established shockwave therapy’s effectiveness for ED.

Our choice was based on:

  • Published clinical evidence supporting the technology
  • Energy delivery appropriate for deep tissue treatment
  • Consistency and reliability of treatment
  • Ability to adjust focal depth for different conditions

We also have radial technology available for conditions where it’s more appropriate, but for ED treatment, we believe focused shockwave offers the best evidence-based approach.

The Bottom Line

Not all “shockwave therapy” is equal. When evaluating treatment options:

  1. Ask about the specific device being used
  2. Understand if it’s focused or radial technology
  3. Consider the condition being treated—depth matters
  4. Look at the research for that device type and your condition
  5. Be skeptical of vague terminology like “acoustic wave” without specifics

For ED treatment specifically, the clinical evidence strongly favors focused shockwave technology. While radial devices may provide some benefit, the research foundation is much stronger for focused ESWT.

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