When patients ask about acoustic wave therapy at our Lakewood Ranch office, two questions come up most often: what is the difference between shockwave and Softwave, and which one do I need? Both use sound pressure waves delivered through a handpiece to the body. Both are non-invasive. Both are marketed for overlapping musculoskeletal conditions. But the way those waves are generated, how deep they travel, what they trigger at the cellular level, and which diagnoses they address most effectively are not the same.
Clinics that list "acoustic wave therapy" on their menu without distinguishing the two are making the decision harder for patients than it needs to be. If you have been told one of these treatments might help you, here is what you actually need to understand before walking in the door.
Why People Confuse These Two Technologies
The overlap is real. Both shockwave (ESWT) and Softwave TRT convert electrical energy into mechanical pressure waves and transmit them through coupling gel into tissue. Both are used for musculoskeletal pain, soft-tissue injuries, and certain chronic conditions. And both are actively marketed by their device companies for conditions that look nearly identical on paper.
The confusion deepens because "acoustic wave therapy" has become a catch-all marketing phrase. It is applied to radial ESWT, low-intensity focused ESWT, and sometimes to aesthetic devices sold primarily for cellulite treatment. When a clinic advertises "acoustic wave" without specifying the device type or treatment protocol, there is no way to determine what you are actually receiving.
The distinction matters because the devices differ in wave physics, tissue depth, primary biological mechanism, and evidence profile for specific conditions. Choosing between them should follow a proper diagnosis, not a marketing preference.
What Shockwave Therapy (ESWT) Actually Is
ESWT stands for extracorporeal shock wave therapy. "Extracorporeal" means the energy source is outside the body. The device generates a rapid pressure impulse that travels through coupling gel into tissue at supersonic speed, producing a true shockwave. The leading edge creates an extremely brief but intense positive pressure spike, followed almost immediately by a negative pressure phase. Peak positive pressure in a focused device can reach 100 megapascals or more.
There are two main categories of ESWT used in musculoskeletal care:
Radial Shockwave (RSWT)
The most common type found in chiropractic and physical therapy offices. A small projectile is pneumatically accelerated down a barrel and strikes a probe tip, generating a pressure wave that spreads outward radially from the contact point. Penetration depth is roughly 3 to 4 centimeters. Pressures are lower than focused ESWT and the energy is more diffuse across a broader treatment zone. Radial ESWT is well suited for superficial tendons and wider treatment areas including the Achilles, plantar fascia, and lateral elbow.
Focused Shockwave (FSWT)
Generated by electromagnetic, electrohydraulic, or piezoelectric sources that concentrate energy at a specific focal point. True focused ESWT can target structures at 5 to 12 centimeters depth with precision. It is used for calcific deposits in the shoulder, deeper hip structures, and certain conditions where a defined focal lesion needs to be addressed at depth. The physics are related to lithotripsy (kidney stone fragmentation), which uses the same shockwave principle at higher energies.
The primary biological mechanism of ESWT is cavitation: the shockwave creates microscopic bubbles in tissue fluid, and when those bubbles collapse, they generate a secondary mechanical stimulus. That stress on cell membranes triggers a cascade: growth factor upregulation, collagen synthesis, fibroblast activation, and improved local circulation. For chronic tendon degeneration (tendinosis), this mechanical stimulus is thought to restart a healing process that has stalled.
The strongest published evidence base for ESWT is in chronic plantar fasciitis, calcific rotator cuff tendinopathy, and lateral epicondylitis. These are conditions where the tendon has failed to progress through a normal healing response and needs a different mechanical stimulus to move forward.
Conditions where ESWT has the most robust published evidence:
- Plantar fasciitis (chronic, non-responsive to conservative care)
- Calcific shoulder tendinopathy
- Lateral epicondylitis (tennis elbow)
- Patellar tendinopathy
- Greater trochanteric pain syndrome
For more on how ESWT is used at our office, see our shockwave therapy page.
What Softwave Therapy Actually Is
Softwave Tissue Regeneration Technology (TRT), delivered through the OrthoGold 100 device, is a specific subcategory of unfocused electrohydraulic shockwave. "Softwave" is a proprietary brand name, not a generic descriptor for a category of devices. The OrthoGold 100 uses an electrohydraulic spark-gap source positioned inside a parabolic reflector that redirects the generated waves into a broad, diverging wavefront rather than concentrating energy at a precise focal point.
Peak pressures produced by Softwave are lower than focused ESWT, and there is no single defined treatment depth. Instead, the wave energy disperses across a larger cross-sectional zone with each pass. This geometry makes Softwave well suited for treating broader tissue areas rather than targeting a single defined focal lesion.
The key differentiation at the research level is stem cell activation. A series of peer-reviewed studies using the OrthoGold 100 device have shown that low-intensity unfocused electrohydraulic shockwave activates tissue-resident mesenchymal stem cells, upregulates vascular endothelial growth factor (VEGF), and promotes neovascularization (formation of new blood vessels). For conditions where compromised circulation is part of the pathological picture, this vascular stimulation is clinically meaningful.
The lower pressure profile also makes Softwave more comfortable than higher-intensity focused ESWT for most patients. Many describe the sensation as mild tapping with minimal discomfort.
Conditions where Softwave has published evidence in peer-reviewed literature:
- Diabetic peripheral neuropathy (improved sensation and pain scores in randomized controlled trials)
- Chronic wounds and diabetic foot ulcers
- Plantar fasciitis (overlapping indication with ESWT)
- Certain chronic soft-tissue pain syndromes
You can learn more about how Softwave is used in our clinic on our Softwave therapy page.
The Real Differences, Side by Side
Here is how the two technologies compare on the variables that matter clinically:
- Wave generation: ESWT uses pneumatic, electromagnetic, or piezoelectric sources to produce supersonic pressure spikes. Softwave uses an electrohydraulic spark gap with a parabolic reflector to create a broad, lower-pressure diverging wavefront.
- Tissue depth and precision: Focused ESWT can target a specific point at 5 to 12 cm. Radial ESWT reaches 3 to 4 cm with diffuse spread. Softwave covers a broader zone across variable depths with no defined focal point.
- Peak pressure: Focused ESWT is highest. Radial ESWT is moderate. Softwave is the lowest of the three.
- Primary biological trigger: ESWT produces cavitation-driven mechanical stimulation that restarts stalled tendon healing. Softwave activates mesenchymal stem cells and promotes neovascularization via low-intensity unfocused waves.
- Treatment comfort: Softwave is the most tolerable for most patients. Focused ESWT at therapeutic intensities for calcific tendinopathy can be uncomfortable, occasionally requiring local anesthetic. Radial ESWT falls in between.
- Strongest evidence base: ESWT leads for calcific tendinopathy and chronic tendinosis. Softwave leads for diabetic neuropathy and conditions where vascular stimulation is the primary therapeutic goal.
Where They Overlap
Both shockwave and Softwave are used for chronic plantar fasciitis, and both have reasonable published evidence in that indication. The choice between them for heel pain often depends on chronicity, the presence of neuropathic symptoms, and the patient's vascular status. A patient with straightforward degenerative plantar fasciitis and no circulatory issues may respond well to ESWT. A patient with diabetic neuropathy affecting the foot and concurrent plantar heel pain may benefit more from Softwave's neovascularization mechanism.
Both are also used as non-surgical options for chronic tendon conditions when other conservative care has not produced adequate results. In those cases, the choice depends on the location and depth of the target pathology.
Neither replaces a proper diagnosis. A patient with chronic heel pain may have plantar fasciitis, a calcaneal stress reaction, tarsal tunnel nerve entrapment, or referred pain from a lumbar disc. Applying an acoustic wave device to the wrong underlying diagnosis will not produce the expected response regardless of which technology is used. The evaluation step is not optional.
How We Use Both at the Clinic
At Spine and Wellness Center Lakewood Ranch, both tools are available and they are not used interchangeably. The starting point is always a complete evaluation: full history, orthopedic and neurological testing, review of available imaging, and a clear identification of the structure involved and its pathological state.
For calcific tendinopathy of the shoulder, radial or focused ESWT is the primary tool. The cavitation mechanism aligns with how calcific deposits are disrupted and resorbed. The evidence for this indication is among the strongest in the musculoskeletal acoustic wave literature.
For patients with peripheral neuropathy where compromised circulation is part of the clinical picture, Softwave is a more logical primary choice. It is part of our neuropathy program alongside Class IV laser, the ReBuilder, and other modalities that address nerve function and vascular supply together. The goal in that context is not tendon stimulation but vascular reactivation and nerve support.
For chronic, treatment-resistant plantar fasciitis, the approach depends on the individual presentation. Patients with concurrent vascular or neuropathic components are evaluated for Softwave. Patients with a straightforward tendinosis pattern and no systemic circulatory factors tend to do well with ESWT protocols.
Some care plans incorporate both modalities in sequence. The sequencing depends on which tissue barrier needs to be addressed first. This is not a decision that benefits from a self-directed brochure comparison. It follows from clinical reasoning about the specific diagnosis.
Both acoustic wave modalities are also used in combination with spinal decompression, Class IV laser, and rehabilitation work depending on what the overall care plan calls for. The value of having multiple tools in the same clinic is that the approach can be matched to the diagnosis rather than the diagnosis being shaped to fit the available tool.
Marketing Red Flags to Watch For
The acoustic wave therapy space carries a high volume of marketing noise. A few patterns worth watching for when evaluating a provider:
- "Acoustic wave therapy" without device specification. This phrase is frequently used to advertise low-intensity radial ESWT at parameters more common in aesthetic clinics than clinical musculoskeletal settings. Therapeutic ESWT protocols for tendon conditions operate at substantially different parameters than aesthetic devices.
- Single-session outcome claims. Most well-studied ESWT protocols for chronic tendinopathy involve 3 to 6 sessions over 4 to 12 weeks. Single-session "fix" language should prompt skepticism about either the protocol or the expectations being set.
- "No side effects." ESWT at therapeutic intensities can produce temporary post-treatment soreness, minor bruising, and localized swelling. These are documented and self-limiting, but a provider claiming zero side effects may be describing a very low-intensity protocol (which may also have weaker clinical effect) or may not be reading their device's clinical literature carefully.
- Treating shockwave and Softwave as identical. They are not the same device, not the same mechanism, and not validated for identical conditions. A provider who cannot explain the distinction between them is not in a position to make an informed selection.
What Evaluation Looks Like at Our Clinic
Before any acoustic wave therapy at our Lakewood Ranch office, Dr. Banman conducts a complete evaluation: full history, orthopedic testing, neurological screening where indicated, and review of available imaging. The goal is to confirm the specific structure involved, its pathological state, and any systemic factors (metabolic status, circulation, chronicity) that influence which tool and protocol will be most appropriate.
If you have been dealing with tendon pain, heel pain, nerve symptoms, or other chronic musculoskeletal complaints and have been told acoustic wave therapy might help, that is a reasonable starting point for a conversation. The right tool follows the right diagnosis. Applying the wrong device to the right patient, or the right device to the wrong diagnosis, produces the same result: limited benefit and time lost.
We schedule new patient evaluations for acoustic wave candidates specifically so the first session is not a trial run. The evaluation informs the plan before any treatment begins.
