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A prospective randomized single-blind study included 60 patients aged 18-65 years who have MPS with active triger points in the upper trapezius muscle. Patients were randomized into two treatment groups as dry needling (DN) and cold spray-stretching. Both treatment groups received 1 treatment per week and totally 3 sessions. Evaluation parameters were pain level assessed by visual analog scale (VAS) and algometer, neck range of motion angles, functional level assessed by neck disability index (NDI). The effects of the treatments on active trigger points were evaluated by sEMG and US histogram. All parameters were evaluated at the beginning of the treatment and after 3 sessions of treatment. Algometer and sEMG were performed also before and after the 1st and 3rd sessions.
OBJECTIVE: To compare the efficacy of dry needling and cold spray stretching treatments using surface electromyography (sEMG) and ultrasound (US) in the treatment of patients with myofascial pain syndrome (MPS) with active trigger point (TrP) in the upper trapezius muscle.
MATERIAL AND METHODS: A prospective randomized single-blind study included 60 patients aged 18-65 years who have MPS with ATP in the upper trapezius muscle. Patients were randomized into two treatment groups as dry needling (DN) and cold spray-stretching. Both treatment groups received 1 treatment per week and totally 3 sessions. Evaluation parameters were pain level assessed by visual analog scale (VAS) and algometer, neck range of motion angles, functional level assessed by neck disability index (NDI). The effects of the treatments on aTP were evaluated by sEMG and US histogram. All parameters were evaluated at the beginning of the treatment and after 3 sessions of treatment. Algometer and sEMG were performed also before and after the 1st and 3rd sessions.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Dry needling | Experimental | It was performed using a deep dry needling technique using 0.25x25 mm disposable sterile steel acupuncture needles (HuaLong, China) while patient was in prone position. The needle inserted in the trigger point and stimulation was performed by manipulating it up and down several times. The needle was kept in the trigger point for 1-3 minutes and removed after the muscle spasm regressed . One session per week, a total of 3 sessions were applied. |
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| Cold spray and stretching | Experimental | The patient was placed on the chair with the head and body upright in the most comfortable position possible and voluntary relaxation was achieved. One end of the muscle was fixed in order to apply passive stretching. The cooler spray (in its content; 0.06% menthol, 2.06% isopropyl alcohol, 2% isopropyl alcohol) was sprayed to the surface at an angle of 30° from a distance of approximately 30-50 cm, while passive stretching was applied. One session per week, a total of 3 sessions were applied |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| dry needling | Other | The needle inserted in the trigger point and stimulation was performed by manipulating it up and down several times. The needle was kept in the trigger point for 1-3 minutes and removed after the muscle spasm regressed |
| Measure | Description | Time Frame |
|---|---|---|
| pain intensity1 | Visual Analog Scale: The Visual Analog Scale (VAS) (0-10 cm) was used to record each patient's current level of neck pain, with 0 indicating no pain and 10 indicating the worst pain that the patient had experienced.Higher scores mean worse outcome | Change from baseline at 3rd week |
| cervical range of motion angles | measured by goniometer for flexion, extension, left and right lateral flexion of cervical spine | Change from baseline at 3rd week |
| pain intensity2 | Algometer: The pain threshold was measured before and after the the first and third sessions with a pressure algometer (Electronic Algometer Commander-USA) in kg / cm². The applied pressure was increased until the point the patient first felt the pain. Measurements were repeated 3 times and the mean average score was recorded. | Change from baseline at 3rd week |
| Disability level | Neck Pain Disability Scale: The questionnaire consists of 20 items and measures neck movements, pain intensity, effect of neck pain on emotion factors, and interference with daily life activities. Each section is scored on a 0-5 rating scale and total score ranges from 0 to 100. Higher scores mean worse outcome. | Change from baseline at 3rd week |
| Measure | Description | Time Frame |
|---|---|---|
| Gray Scale Ultrasonography | The upper trapezius muscle, where the trigger point was located, is visualized with US, and the images containing the focal, hypoechoic area (trigger point) in the middle of the muscle are recorded. The echogenicity values of these images is analyzed with ImageJ software. | Change from baseline at 3rd week |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Duygu Külcü, prof | Haydarpaşa Numune Edutation and Research Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Haydarpaşa Numune Education and Research Hospital | Istanbul | Turkey (Türkiye) |
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| ID | Term |
|---|---|
| D009209 | Myofascial Pain Syndromes |
| ID | Term |
|---|---|
| D009135 | Muscular Diseases |
| D009140 | Musculoskeletal Diseases |
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| ID | Term |
|---|---|
| D000079245 | Dry Needling |
| ID | Term |
|---|---|
| D000529 | Complementary Therapies |
| D013812 | Therapeutics |
| D026741 | Physical Therapy Modalities |
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| cold spray and stretching | Other | The cooler spray (in its content; 0.06% menthol, 2.06% isopropyl alcohol, 2% isopropyl alcohol) was sprayed to the surface at an angle of 30° from a distance of approximately 30-50 cm, while passive stretching was applied. |
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| Surface electromyography |
While the patient was sitting on a chair, EMG electrodes were placed in the middle of the upper trapezius muscle between the seventh cervical vertebra (C7) and the acromion, covering the trigger point area. The patient was asked to keep the trapezius muscle in the resting position for six seconds, the average of the recordings repeated 3 times with 1 minute intervals was evaluated as resting EMG activity. Then he was asked to raise both shoulders and hold this position in isometric contraction for six seconds. The maximum and average amplitude values obtained from the recordings that were repeated 3 times with 1 minute intervals were also averaged. |
| Change from baseline at 3rd week |