Dry needling, trigger point electroacupuncture and motor point electroacupuncture for the treatment of myofascial pain syndrome involving the trapezius: a randomised clinical trial.

If you've ever dealt with nagging shoulder and neck pain, you're not alone. Myofascial pain syndrome (MPS) — a condition caused by tight, irritable knots in the muscles called trigger points — is one of the most common causes of chronic muscle pain. A recent clinical trial published in Acupuncture in Medicine explored three different needling approaches to treat MPS in the trapezius, the large muscle spanning your shoulders and upper back.

Researchers recruited 90 patients and divided them into three groups. The first group received dry needling directly into the painful trigger points. The second group received electrical stimulation through needles placed at those same trigger points — a technique called electroacupuncture. The third group received electrical stimulation at motor points, which are specific sites where nerves enter the muscle, rather than at the trigger points themselves.

All three groups completed seven treatment sessions and reported their pain levels throughout the study. The good news? Every single group experienced meaningful reductions in pain. However, the motor point electroacupuncture group showed the greatest improvement, with pain scores averaging nearly one full point lower than the dry needling group on a standard pain scale. There were no significant differences in quality of life between the groups by the end of treatment.

What does this mean for you? If you're living with trapezius-related muscle pain, acupuncture-based treatments — particularly electroacupuncture targeting motor points — may offer real, measurable relief. The finding that all three techniques helped suggests that needling the trapezius in any of these ways can be beneficial, but the specific approach your practitioner uses may make a difference in how much pain relief you experience.

To get the best results, always seek care from a licensed and qualified acupuncture or dry needling practitioner who can tailor treatment to your individual needs.

This randomised clinical trial (n=90) compared three needling interventions for myofascial pain syndrome (MPS) of the trapezius: trigger point (TrP) dry needling (Group 1), intramuscular electrical stimulation of TrPs (Group 2), and motor point and/or spinal accessory nerve electroacupuncture (Group 3). Each participant completed seven treatment sessions, with pain assessed via VAS and quality of life via SF-12. Growth curve analysis revealed statistically significant pain reductions across all three groups. Notably, Group 3 demonstrated superior pain outcomes compared to Group 1, with a mean difference of 0.98 VAS units (95% CI: 0.23–1.74; p=0.012). No significant difference was observed between Groups 1 and 2, and SF-12 scores did not differ significantly across groups at treatment conclusion. Clinical takeaway: Motor point electroacupuncture may offer a modest but statistically significant advantage over TrP dry needling for trapezius MPS pain relief, suggesting neuroanatomical targeting of motor points warrants consideration as a first-line electroacupuncture strategy in MPS management.