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The Healing Power of Sound: Understanding Shockwave Therapy

If you hear the term “Shockwave Therapy” you might instinctively imagine something like an electric shock. But don’t let the name scare you. In the medical world, this treatment uses sound, specifically high-energy acoustic pulses, to jump-start your body’s natural healing ability.


Originally developed to break up kidney stones without surgery, Extracorporeal Shockwave Therapy (ESWT) has evolved into a powerful treatment for chronic pain, non-healing wounds, and sports injuries (1, 2).


Below is a breakdown of how this “sound science” works and why it might be the solution for that nagging injury that just won’t go away.


It’s Not Magic. It’s Physics and Biology.


1. The “Wake-Up Call” for Your Cells

Think of a shockwave as a microscopic “shove". When the device sends these pulses into your body, they travel easily through soft tissue (such as fat or water) but release energy when they encounter a change in density. For example, where a tendon meets bone or with pathological tissue such as scar tissue. This physical force, known as momentum transfer, stretches and compresses your cells enough to stimulate them without causing damage (3). Because of momentum transfer, patients will only feel the discomfort of shockwave if there is injured/damaged/pathological tissue in the area. Healthy tissue won't elicit any discomfort or effect.



2. Flipping the “Repair” Switch

Once your cells sense this mechanical stimulus of the shockwave, they respond by releasing biological signals in a process scientists call mechanotransduction (3). This triggers a cascade of healing events:

  • New Blood Vessels (Angiogenesis): The treatment promotes the release of vascular endothelial growth factor (VEGF) and nitric oxide. These compounds signal the body to form new blood vessels, improving oxygen and nutrient delivery to the injured area (2, 4).

  • Stem Cell Activation: Shockwaves recruit the body’s own stem cells to help repair damaged tissue. This includes tendons and ligaments (2)!

  • Muscle Repair: Emerging research suggests that shockwaves can encourage muscle cells to fuse together to repair tears. They do this by stimulating key repair proteins within the muscle cells to accelerate regeneration (5).


Shutting Down the Pain

One of the most immediate benefits patients report is pain relief. This occurs through two primary mechanisms:

  • “Resetting” the Nerves: Chronic pain can create a cycle in which nerves continually send pain signals to the brain. Shockwaves deliver a controlled hyperstimulation that may interrupt this cycle by out competing the pain signals from the nerves. This helps to reduce the nervous system’s “memory” of pain (3).

  • Reducing Pain Chemicals: Treatment causes a temporary release of Substance P, a neurotransmitter involved in pain signaling. While this may cause discomfort during the session, it can ultimately deplete Substance P levels in the area, leading to longer-lasting relief. This is similar to the mechanism behind capsaicin (chili pepper) creams (6).

What Can It Treat?

Although ESWT began as a treatment for kidney stones, its applications have expanded significantly:

  • Tendon and Ligament Injuries: Effective for conditions such as plantar fasciitis, tennis elbow, shoulder tendinopathy, chronic ankle sprains, partial ligament tears and more! It may also help break down scar tissue and calcific deposits that form on tendons (1, 2).

  • Muscle Injuries: Early evidence suggests benefits for muscle strains and sports injuries by accelerating muscle cell repair (5).

  • *Non-Healing Wounds: Used for diabetic foot ulcers and certain burns, shockwave therapy may help reduce bacterial load and stimulate tissue repair in chronic wounds (2).

  • *Men’s Health: Increasingly used as a non-invasive option for erectile dysfunction (ED), where it may improve blood flow and stimulate new vessel formation (7).

  • *Emerging Neurological Applications: Researchers are investigating Transcranial Pulse Stimulation (TPS): a shockwave-based technique delivered through the skull. They hope to stimulate neurons in patients with Alzheimer’s disease (3).

*These applications are out of the scope for Chiropractic care. Seek help from your medical doctor to see if Shockwave Therapy is right for your specific condition.


The Bottom Line

Shockwave therapy is a non-invasive treatment that harnesses the physics of sound to activate the biology of healing. By stimulating blood vessel growth, calming overactive pain pathways, and supporting tissue regeneration, it offers a needle-free and surgery-free option for many chronic conditions (2, 5).


While not a miracle cure, it represents a science-backed approach that helps the body do what it was designed to do: heal itself.


Redwood Spine & Mobility

Shockwave Therapy is only available at the San Jose location.

Ready to book your first visit?




References

  1. Mariotto, S., de Prati, A. C., Cavalieri, E., Amelio, E., Marlinghaus, E., & Suzuki, H. (2009). Extracorporeal shock wave therapy in inflammatory diseases: molecular mechanism that triggers anti-inflammatory action. Current medicinal chemistry, 16(19), 2366–2372. https://doi.org/10.2174/092986709788682119

  2. Mittermayr, R., Antonic, V., Hartinger, J., Kaufmann, H., Redl, H., Téot, L., Stojadinovic, A., & Schaden, W. (2012). Extracorporeal shock wave therapy (ESWT) for wound healing: technology, mechanisms, and clinical efficacy. Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society, 20(4), 456–465. https://doi.org/10.1111/j.1524-475X.2012.00796.x

  3. Wess, O., & Mayer, J. (2025). The interaction of shock waves with biological tissue - momentum transfer, the key for tissue stimulation and fragmentation. International journal of surgery (London, England), 111(4), 2810–2818. https://doi.org/10.1097/JS9.0000000000002261

  4. Santamato, A., Beatrice, R., Micello, M. F., Fortunato, F., Panza, F., Bristogiannis, C., Cleopazzo, E., Macarini, L., Picelli, A., Baricich, A., & Ranieri, M. (2019). Power Doppler Ultrasound Findings before and after Focused Extracorporeal Shock Wave Therapy for Achilles Tendinopathy: A Pilot Study on Pain Reduction and Neovascularization Effect. Ultrasound in medicine & biology, 45(5), 1316–1323. https://doi.org/10.1016/j.ultrasmedbio.2018.12.009

  5. Ryskalin, L., Fulceri, F., Soldani, P., D'Agostino, M. C., Morucci, G., Moscato, S., & Gesi, M. (2025). Ultrastructural insights into early myoblast differentiation induced by shockwave stimulation. Frontiers in physiology, 16, 1636931. https://doi.org/10.3389/fphys.2025.1636931

  6. Maier, M., Averbeck, B., Milz, S., Refior, H. J., & Schmitz, C. (2003). Substance P and prostaglandin E2 release after shock wave application to the rabbit femur. Clinical orthopaedics and related research, (406), 237–245. https://doi.org/10.1097/01.blo.0000030173.56585.8f

  7. Wang, H. J., Cheng, J. H., & Chuang, Y. C. (2017). Potential applications of low-energy shock waves in functional urology. International journal of urology : official journal of the Japanese Urological Association, 24(8), 573–581. https://doi.org/10.1111/iju.13403


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