Shockwave Therapy for Trigger Points

What Is Myofascial Trigger Point Pain?

You press on a spot in your upper back, and instead of ordinary muscle soreness, you feel a distinct knot that radiates pain into your shoulder, up toward your neck, or even into your head. The pain is disproportionate to what you’d expect from pressing on a muscle. The area has felt tight and irritable for weeks — maybe months — and no amount of stretching seems to fully resolve it.

This is the experience of a myofascial trigger point — a hyperirritable spot within a taut band of skeletal muscle. Trigger points are among the most common and least well-understood sources of musculoskeletal pain. They produce local tenderness and, characteristically, referred pain — pain felt in a predictable pattern that is distant from the trigger point itself.

Myofascial pain syndrome (MPS) — the condition defined by the presence of active trigger points — affects an estimated 30 to 85% of patients presenting with musculoskeletal pain complaints, depending on the clinical setting. Trigger points can occur in virtually any skeletal muscle, but are most common in the upper trapezius, levator scapulae, infraspinatus, rhomboids, quadratus lumborum, and piriformis.

The underlying physiology involves a localized contraction knot where a cluster of muscle fibers remains in a shortened, contracted state. This sustained contraction compresses local blood vessels, reduces oxygen supply, and creates a self-perpetuating cycle of metabolic distress and pain signaling. The area becomes sensitized, and the nervous system amplifies pain signals from the region.

Traditional treatments include manual pressure release, dry needling, trigger point injections (often with lidocaine or saline), stretching, and physical therapy. These approaches work for many patients, but a substantial number develop chronic or recurrent trigger points that resist repeated treatment. For these persistent cases, shockwave therapy offers a different mechanical approach to disrupting the pain cycle.

How Shockwave Therapy Works for Trigger Points

Shockwave therapy addresses myofascial trigger points through mechanical energy that penetrates deeper and covers a broader area than manual pressure alone. Both focused and radial shockwave devices are used for this application, and each has distinct characteristics:

Radial shockwave therapy (rSWT) is the more commonly used modality for trigger points. The radial pressure wave disperses from the applicator tip, covering a wider area. This makes it well-suited for treating taut muscle bands and the surrounding myofascial tissue. The broader energy distribution allows the provider to treat the trigger point itself and the associated muscle tightness in the same session.

Focused shockwave therapy (fESWT) concentrates energy at a specific depth, allowing precise targeting of a discrete trigger point. Focused devices can deliver higher peak energy to the exact location of the contraction knot. This may be advantageous for deep-seated trigger points or those in thicker muscle groups like the gluteus medius or quadratus lumborum.

The therapeutic mechanisms for trigger point treatment include:

• Mechanical disruption of the contraction knot: The acoustic energy physically disrupts the sustained sarcomere (muscle fiber unit) contraction that defines the trigger point. This mechanical effect may break the cycle of contraction, ischemia (restricted blood flow), and pain.
• Increased local blood flow: Shockwave energy promotes vasodilation and neovascularization in the treated area, addressing the ischemia that perpetuates trigger point activity. Improved circulation brings oxygen and nutrients while removing metabolic waste products.
• Pain gate modulation: The intense mechanical stimulation may overwhelm pain receptors and alter pain signal transmission — a mechanism similar to how deep-tissue massage or manual trigger point release produces temporary pain relief that can become lasting.
• Reduction of calcitonin gene-related peptide (CGRP) and substance P: These neuropeptides play roles in pain sensitization. Studies suggest shockwave therapy may reduce their concentration in treated tissue, helping to desensitize the area. (Note: The evidence for CGRP reduction comes primarily from preclinical/animal studies; Substance P reduction is better documented in human research.)

The net effect is a multi-modal attack on the trigger point: mechanically disrupting the knot, restoring blood flow, and reducing the pain signaling that keeps the cycle active.

FDA status: Shockwave therapy for trigger points is an off-label use. ESWT devices are not specifically FDA-cleared for myofascial trigger point treatment.

What the Research Says

Clinical research on shockwave therapy for trigger points has expanded significantly over the past decade, with most studies showing positive outcomes:

Jeon et al. (2012) conducted a randomized controlled trial comparing focused ESWT to trigger point injection (TPI) with lidocaine in patients with myofascial pain syndrome of the upper trapezius. Both groups received treatment once weekly for 3 weeks. At 4-week follow-up, both groups showed significant improvement in pain scores and pressure pain threshold (a measure of how much pressure the trigger point can tolerate before producing pain). The ESWT group showed comparable or slightly better outcomes than the injection group, with the advantage of being non-invasive.

Ramon et al. (2015) published a comprehensive review of shockwave therapy applications in musculoskeletal medicine, including myofascial trigger points. The review concluded that ESWT demonstrates consistent effectiveness for myofascial pain, noting its advantage as a non-invasive alternative to injections. The authors highlighted that radial shockwave therapy was particularly practical for trigger point treatment given its broader energy distribution and ease of application.

Cho et al. (2012) compared focused ESWT to transcutaneous electrical nerve stimulation (TENS) for upper trapezius trigger points in a randomized controlled trial. After 2 weeks of treatment, the ESWT group showed significantly greater improvement in pain visual analog scale (VAS) scores, pressure pain threshold, and cervical range of motion compared to the TENS group.

Ji et al. (2012) evaluated focused ESWT versus sham treatment for trigger points in the upper trapezius in a randomized controlled study. The active ESWT group showed statistically significant improvement in pain scores and cervical range of motion compared to the sham group at 4-week follow-up.

Moghtaderi et al. (2014) conducted a randomized, placebo-controlled trial examining radial shockwave therapy for gastroc-soleus trigger points in patients with plantar fasciitis. The ESWT group showed significant pain reduction compared to placebo, suggesting that treating lower-leg trigger points contributing to heel pain may be a useful adjunct in plantar fasciitis management.

Taheri et al. (2016) compared ESWT to ultrasound therapy for myofascial trigger points in a randomized controlled trial. The ESWT group showed significantly greater improvement in pain, disability, and pressure pain threshold at follow-up, suggesting superiority over therapeutic ultrasound.

Evidence summary

The body of research supports shockwave therapy as an effective treatment for myofascial trigger points, particularly in the upper trapezius region (which has been the most studied location). Outcomes are generally comparable to or better than trigger point injections and superior to TENS or therapeutic ultrasound. Both radial and focused devices show effectiveness, though head-to-head comparisons between the two modalities for trigger points are limited.

Limitations include the concentration of studies on upper trapezius trigger points (with fewer studies on other locations), generally small sample sizes, and variability in treatment protocols. Long-term follow-up data beyond 3 to 6 months is also limited.

What to Expect During Treatment

A shockwave therapy session for trigger points is typically performed in a physical therapy, sports medicine, or musculoskeletal clinic:

Before treatment: Your provider will perform a physical examination to identify and confirm the location of active trigger points. This involves palpation (pressing) along the muscle to find taut bands and reproduce your characteristic pain or referred pain pattern. The provider will mark the locations for treatment and may note your baseline pain levels and range of motion for comparison.

During the session: You’ll be positioned to expose and relax the affected muscle group. For upper trapezius trigger points, you’ll typically be seated or lying face-down. For lower back or gluteal trigger points, you’ll lie on your side or stomach.

The provider applies coupling gel to the skin over the trigger point area. The shockwave applicator is placed directly over the trigger point, and pulses are delivered while the provider maintains pressure on the area.

For radial shockwave, a typical protocol involves 2,000 to 3,000 pulses per trigger point at moderate energy settings (1.5 to 3.0 bar pressure, 8 to 12 Hz frequency). The provider may move the applicator in small circles around the trigger point and along the associated taut band.

For focused shockwave, 500 to 1,500 pulses per trigger point at the appropriate depth setting are common. The provider uses the device’s depth control to focus energy precisely at the trigger point level.

The sensation is a deep, rhythmic pulsing directly on the tender point. Because active trigger points are inherently sensitive, the treatment produces moderate discomfort — typically rated 4 to 6 on a 10-point scale. This is similar to the discomfort experienced during deep-tissue massage or manual trigger point release. Providers adjust energy levels based on your tolerance.

A session treating 2 to 4 trigger points takes approximately 15 to 25 minutes, with the full appointment lasting 25 to 35 minutes.

After treatment: The treated area may feel sore and slightly stiff for 24 to 48 hours, similar to post-massage soreness. Gentle stretching of the treated muscle is generally recommended. Most providers advise avoiding intense exercise involving the treated muscle group for 48 hours. Normal daily activities can be resumed immediately.

Number of Sessions & Recovery Timeline

Treatment protocols for myofascial trigger points generally involve 3 to 6 sessions, spaced 1 to 2 weeks apart. The number of sessions depends on the number of trigger points, their severity, how long they have been active, and your individual response.

Typical progression:

• After sessions 1-2: Many patients notice immediate but temporary pain relief lasting several hours to a few days. This is likely due to the pain gate mechanism and local blood flow changes. The trigger point may still be palpable but less tender. Some patients experience a temporary increase in soreness before improvement.
• After sessions 3-4: More sustained pain reduction typically develops. The trigger point begins to decrease in size and tenderness. Range of motion often improves noticeably. Referred pain patterns may become less frequent or less intense.
• After sessions 5-6 (if needed): Further reduction in trigger point activity. Many patients report that the knot has softened or resolved. Some stubborn or long-standing trigger points may require the full course of treatment.
• 2-4 weeks after final session: Full therapeutic benefit often continues to develop after the treatment series is complete. The tissue remodeling and desensitization processes continue working.

Unlike some conditions where shockwave therapy requires extended recovery, trigger point treatment allows most patients to maintain their normal exercise and activity routine (with 48-hour modifications after each session). Many providers incorporate stretching and strengthening exercises as part of the treatment plan to address the muscular imbalances that contribute to trigger point formation.

For patients with widespread myofascial pain involving trigger points in multiple body regions, treatment may be staged across different areas over several weeks.

Cost & Insurance Coverage

Shockwave therapy for trigger points typically costs $150 to $400 per session, with a full course of 3 to 6 sessions totaling $450 to $2,400. Pricing varies by geographic area, provider type (physical therapist, chiropractor, sports medicine physician), and whether radial or focused ESWT is used.

Insurance coverage is limited. Because trigger point treatment with ESWT is off-label, most insurance plans do not reimburse it directly. However, some providers bundle shockwave therapy into a broader physical therapy or musculoskeletal rehabilitation visit, which may be partially covered under therapy benefits. Ask your provider’s billing department about coverage options.

Cost comparison with alternatives:

• Trigger point injections: $100-$300 per visit (may be covered by insurance), but often need to be repeated
• Dry needling: $75-$200 per session (coverage varies by state and plan)
• Massage therapy: $80-$150 per session (rarely covered by insurance)
• Ongoing physical therapy: $50-$100 copay per visit (typically covered, but may require many visits)

For patients with chronic trigger points that have required repeated injections or frequent manual therapy sessions, a defined course of shockwave therapy may compare favorably when the total cost of ongoing management is considered.

Who Is a Good Candidate?

Shockwave therapy for trigger points is most appropriate for patients in specific clinical situations:

Good candidates typically include:

• Patients with chronic myofascial trigger points that have persisted for more than 6 to 8 weeks despite manual therapy, stretching, and other conservative measures
• Individuals with trigger points that have been temporarily responsive to manual therapy or injection but keep recurring
• Patients who prefer a non-invasive alternative to dry needling or trigger point injections — particularly those with needle phobia or who have not tolerated injections well
• Individuals with multiple active trigger points across a region (e.g., upper back and neck) that are difficult to address individually with injections
• Patients with myofascial pain contributing to tension headaches, neck pain, shoulder dysfunction, or low back pain who want to address the trigger point component
• Athletes or active individuals whose performance is limited by persistent myofascial tightness and trigger point pain

Shockwave therapy may not be the best fit for:

• Patients with acute muscle strains or tears — active tissue damage requires different management
• Trigger points that respond well to a single manual release or injection — if conventional treatment works, there may be no need for ESWT
• Patients with fibromyalgia — while fibromyalgia involves widespread tender points, the underlying pathology differs from myofascial trigger points, and the evidence for ESWT in fibromyalgia is more limited
• Pregnant individuals
• Patients with blood clotting disorders or on anticoagulant medication
• Active infection or skin lesion over the treatment area
• Malignancy in the treatment area

Important considerations:

Trigger points rarely exist in isolation. They are often a symptom of underlying issues — postural dysfunction, muscle imbalances, repetitive occupational strain, psychological stress, or movement patterns that chronically overload specific muscles. Shockwave therapy can effectively treat existing trigger points, but lasting resolution typically requires addressing the root cause.

A comprehensive treatment approach might include shockwave therapy to resolve active trigger points, combined with corrective exercises, ergonomic modifications, stress management, and movement retraining. Ask your provider about their approach to identifying and addressing the factors that are causing your trigger points to form.

References

1. Jeon JH, Jung YJ, Lee JY, et al. The effect of extracorporeal shock wave therapy on myofascial pain syndrome. Ann Rehabil Med. 2012;36(5):665-674.
2. Ramon S, Gleitz M, Hernandez L, Romero LD. Update on the efficacy of extracorporeal shockwave treatment for myofascial pain syndrome and fibromyalgia. Int J Surg. 2015;24(Pt B):201-206.
3. Cho YS, Park SJ, Jang SH, et al. Effects of the combined treatment of extracorporeal shock wave therapy (ESWT) and stabilization exercises on pain and functions of patients with myofascial pain syndrome. J Phys Ther Sci. 2012;24(12):1319-1323.
4. Ji HM, Kim HJ, Han SJ. Extracorporeal shock wave therapy in myofascial pain syndrome of upper trapezius. Ann Rehabil Med. 2012;36(5):675-680.
5. Moghtaderi A, Khosrawi S, Dehghan F. Extracorporeal shock wave therapy of gastroc-soleus trigger points in patients with plantar fasciitis: A randomized, placebo-controlled trial. Adv Biomed Res. 2014;3:99.
6. Taheri P, Vahdatpour B, Andalib S. Comparative study of shock wave therapy and trigger point injection in myofascial pain syndrome. J Res Med Sci. 2016;21:47.