Shockwave therapy has a meaningful evidence base for upper-trapezius myofascial neck pain. Meta-analyses of randomized trials report improvements in pain and pressure-pain threshold, and recent sham-controlled trials show benefit from both radial and focused shockwave (extracorporeal shockwave therapy, ESWT). A 2025 randomized trial also found that focused shockwave reduced objectively measured stiffness at upper-trapezius trigger points. The limits matter. Neck-disability outcomes are less consistent, shockwave has not clearly outperformed every active treatment, and these studies apply mainly to myofascial and trigger-point pain, not every cause of neck pain. The diagnosis comes first.
What kind of neck pain has shockwave been studied for?
Almost entirely myofascial pain syndrome: painful, tender areas and trigger points in the neck and shoulder muscles, most often the upper trapezius. The trials below should not be applied to cervical radiculopathy, disc herniation, cervical stenosis, myelopathy, fracture, inflammatory disease, or migraine. Arm numbness, weakness, clumsy hands or trouble walking call for a different assessment, covered on our neck pain and headache page.
What do the meta-analyses show?
Pain improves; disability is less certain. Jun and colleagues, in the American Journal of Physical Medicine & Rehabilitation (2021), pooled 11 randomized trials of neck and shoulder myofascial pain. Compared with other treatments, shockwave improved pain intensity (standardized mean difference 0.67) and pressure-pain threshold, the pressure needed to provoke pain (SMD 1.19). Neck disability showed no difference (SMD 0.03, p = .93). In the focused-shockwave subgroup, pain (SMD 0.75) and pressure-pain threshold (SMD 1.70) both improved significantly.
Better than sham, not clearly better than active care. Zhang and colleagues, in Archives of Physical Medicine and Rehabilitation (2020), reviewed 10 trials with 477 patients with trapezius myofascial pain. Shockwave reduced pain more than sham shockwave or ultrasound. Against dry needling, trigger-point injection and laser therapy, it showed no significant advantage for pain or neck disability. The authors suggested it may work best as an addition to those treatments rather than a replacement.
Can shockwave change tissue stiffness?
One trial measured it directly. Vasvit and colleagues, in Complementary Therapies in Medicine (2025), randomized 64 office workers with upper-trapezius myofascial pain to focused shockwave or sham, once a week for four weeks. Stiffness was measured with shear-wave ultrasound.
- Trigger-point stiffness fell by 6.1 kPa right after treatment (p = .009).
- Stiffness of the lower aponeurosis, the connective tissue beneath the muscle, fell by 5.3 kPa by four weeks (p = .004).
- Pain decreased at every time point after focused shockwave. The sham group also improved in the final two weeks.
- Neck disability improved in both groups, with no difference between them.
This is objective evidence that focused shockwave can change measured tissue stiffness. It is not evidence that shockwave removes fibrosis, and the disability result means the study did not show a clear functional advantage over sham. A 2026 correction to the paper changed only its ethics and registry numbers, not its results. We do not quote its energy setting, which appears garbled in the published abstract.
For what stiffness does and does not mean, see trapezius fibrosis and tissue stiffness.
Focused vs. radial shockwave for the upper trapezius
The research has not shown a winner. Şenlikci and colleagues, in Lasers in Medical Science (2025), randomized 57 patients with active upper-trapezius trigger points to radial shockwave, focused shockwave, or sham for four sessions. Pain improved in all three groups. Both active treatments improved pain more than sham, with similar results to each other at every time point. Differences in change over the medium and long term were not statistically significant (p = .065).
That does not make the two equivalent, and it does not mean focused shockwave's adjustable depth has no value. It means this trial, in a superficial muscle, did not show one to be superior. The choice follows the target the exam identifies: a broad, superficial area for radial shockwave; a smaller or more localized target for focused shockwave. Our radial vs. focused shockwave article explains the physics.
Evidence at a glance
| Study | Design and size | Comparison | Main finding | Key limitation |
|---|---|---|---|---|
| Vasvit et al., 2025 | RCT, 64 patients | Focused shockwave vs. sham | Stiffness down 6.1 kPa (trigger point) and 5.3 kPa (aponeurosis); pain improved | No between-group difference in disability |
| Şenlikci et al., 2025 | RCT, 57 patients | Radial vs. focused vs. sham | Both active treatments beat sham for pain | No clear radial-vs-focused winner |
| Jun et al., 2021 | Meta-analysis, 11 RCTs | Shockwave vs. other treatments | Pain SMD 0.67; pressure-pain threshold SMD 1.19 | No effect on neck disability |
| Zhang et al., 2020 | Meta-analysis, 10 studies, 477 patients | Shockwave vs. sham, ultrasound, active care | Better pain than sham or ultrasound | Not clearly better than dry needling, injection or laser |
How many sessions did the trials use?
Both 2025 trials used four sessions, given weekly in the focused-shockwave stiffness trial. Settings varied across the trials in the meta-analyses, and no single protocol has been shown to be best. In practice, the plan is adjusted to the tissue, your tolerance, and how you respond from one visit to the next.
Why pain can improve without a large disability difference
Pain and pressure sensitivity respond quickly and are measured at the sore spot. Disability scores such as the Neck Disability Index reflect daily function, sleep, work and concentration, and they change more slowly and for more reasons. In the Vasvit trial, disability improved with sham as well, which suggests that attention, time and expectation also shape function scores. A treatment can ease a painful trigger point without, on its own, producing a measurable functional gain over sham.
Does shockwave treat cervical discs or arthritis?
No evidence shows that it does. The neck shockwave trials studied muscle. They did not test disc herniation, cervical arthritis, stenosis, nerve-root compression or spinal cord compression, and shockwave does not decompress a nerve or regenerate a disc.
Does shockwave replace exercise or rehabilitation?
No. Exercise and staying active are core parts of chronic neck pain care. A 2025 German clinical practice guideline for nonspecific neck pain recommends activation and self-management, plus exercise therapy for neck pain lasting longer than 12 weeks. A 2024 meta-analysis in office workers found that strengthening the neck, shoulder and shoulder-blade muscles reduced neck pain and disability, though the certainty of that evidence was low. Shockwave fits as a complement to that work.
Who may be a reasonable candidate?
People whose neck pain is persistent and mainly myofascial: tender, reproducible trigger points or restricted, sensitive tissue in the upper trapezius or nearby muscles, without red flags or neurologic signs, who have not improved enough with appropriate conservative care.
Who needs a different evaluation?
- Arm pain, numbness, tingling or weakness, or clumsy hands
- Trouble walking or balance changes
- A sudden, severe or new headache, or a major change in a usual headache pattern
- Neck pain after significant trauma, or with fever or other signs of illness
- Headache features that suggest migraine rather than a muscular presentation
How Novo uses the evidence
The research supports shockwave for selected myofascial neck pain, particularly for pain and tenderness. It does not support it as a cure, as a replacement for exercise, or as treatment for every neck problem. We start with an exam to determine whether the presentation is primarily myofascial, what the headache pattern suggests, and whether anything needs referral. If shockwave fits, manual treatment and rehabilitation often sit alongside it. For how trigger points and structural tissue change differ, see trigger point or fibrous adhesion? You can compare our tools on the services page, read our shockwave therapy overview, or see how we approach chronic neck pain and tension headache.
Sources
- Vasvit P, Klarod K, Sukkho O, et al. Therapeutic effect of focused-extracorporeal shockwave therapy on muscular and adjacent tissue stiffness and pain changes in myofascial pain syndrome: a randomized controlled trial study. Complementary Therapies in Medicine. 2025;92:103203. PMID 40609961. (link) Corrigendum: 2026;97:103326. PMID 41644337. (link)
- Şenlikci HB, Yücealp Ö, Borman P, et al. Comparison of the efficacy of radial and focused extracorporeal shock-wave therapy (ESWT) in myofascial pain syndrome: a randomized, sham-controlled study. Lasers in Medical Science. 2025;40(1):404. PMID 41042302. (link)
- Jun JH, Park GY, Chae CS, Suh DC. The effect of extracorporeal shock wave therapy on pain intensity and neck disability for patients with myofascial pain syndrome in the neck and shoulder: a meta-analysis of randomized controlled trials. American Journal of Physical Medicine & Rehabilitation. 2021;100(2):120-129. PMID 32520797. (link)
- Zhang Q, Fu C, Huang L, et al. Efficacy of extracorporeal shockwave therapy on pain and function in myofascial pain syndrome of the trapezius: a systematic review and meta-analysis. Archives of Physical Medicine and Rehabilitation. 2020;101(8):1437-1446. PMID 32234411. (link)
- El-Allawy A, Hecht N, Luedtke K, et al. Clinical practice guideline: nonspecific neck pain. Deutsches Ärzteblatt International. 2025;122(20):552-557. PMID 40665902. (link)
- Jones LB, Jadhakhan F, Falla D. The influence of exercise on pain, disability and quality of life in office workers with chronic neck pain: a systematic review and meta-analysis. Applied Ergonomics. 2024;117:104216. PMID 38219373. (link)
