The Efficacy of Thread Embedding Acupuncture on Pain Score, Neck Disability Index, and Pressure Pain Threshold for Myofascial Pain Therapy in the Upper Trapezius Muscle

This is a clinical trial study to evaluate and compare the effects of thread-embedding acupuncture and sham thread-embedding acupuncture as a therapy for myofascial pain in the upper trapezius muscle. The subjects are 44 males/female with myofascial pain in the upper trapezius muscle and will be randomly assigned to 2 groups: (1) thread-embedding acupuncture and (2) Sham thread-embedding acupuncture. The subjects will receive a single treatment. The outcome will be assessed before treatment (baseline) and 3 days, 1 week, 4 weeks, 8 weeks after treatment. Patients and the outcome assessors will be blinded to the group allocation.

Inclusion criteria

• Male or female aged 18-59 years.
• Subject with myofascial pain in the upper trapezius muscle.
• VAS score of 30-70 mm from 100 mm during activities (everyday activities or light exercise).
• Pain > 3 months.
• Willing to participate in this research to completion and sign informed consent.

Exclusion criteria

• Fibromyalgia.
• Have had cervical spine surgery.
• Have done Dry needling therapy on the upper trapezius muscle in the last 9 days
• Have done thread acupuncture on the upper trapezius muscle in the last 6 months.
• Have performed pharmacopuncture on the upper trapezius muscle in the last 6 months.
• VAS score is more than 70 mm than 100 mm at resting.
• History of anti-inflammatory drug treatment in the previous 2 weeks.
• History of intra-articular steroid injections in the previous 3 months.
• There is a tumor, wound, or skin infection at the needle insertion area.
• Fever (≥ 37.5 oC).
• There is a hypersensitivity reaction in previous acupuncture therapy (metal allergy, severe atopy, keloids, or other skin hypersensitivity).
• Suffering from a blood disorder or taking blood thinners (anti-platelet or anti-coagulant drugs).
• Have a heart condition or uncontrolled diabetes.
• Blood glucose level (GDS) ≥200 mg/dL is checked by capillary blood using a glucometer.