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Research suggests that myofascial trigger points (MTrP) play an important role in explaining pain in patients with musculoskeletal knee disorders. Trigger points are usually defined as hypersensitive tender spots within taut bands of skeletal muscles that are painful on muscle stimulation and that usually elicit referred pain. Treatment of these trigger points could possibly alleviate symptoms in patients with knee pain. However, literature on the effect of trigger point therapy, dry needling in particular, in patients with musculoskeletal knee disorders is scarce. The purpose of this study is to examine the effect of trigger point therapy (dry needling (DN)) on pain, presence of altered central pain processing, muscle features and gait pattern in patients with knee osteoarthritis (KOA). 60 patients with symptomatic KOA will participate in this study. They will randomly be allocated in either an experimental group (EG) (dry needling technique) or a placebo group (PG) (sham needling technique). Pain (Visual analogue scale (VAS) & KOA outcome score (KOOS), muscle features during gait and gait pattern (3D gait analysis and surface electroMyoGraphy (EMG)) and presence of altered central pain processing (Central Sensitization Inventory (CSI), Quantitative Sensory testing (QST)) will be measured at baseline and 15 minutes after the intervention. Additionally, pain will be measured 3 days after the intervention. The investigators hypothesize that the effect on the outcome measures will be significantly larger in the EG compared to the PG.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| DN group | Experimental | All identified MTrPs were inserted with a sterile filiform needle (0,30mm x 40mm or 0,30mm x 75mm, depending on the muscle) that moved up- and downwards until a local twitch response was elicited. When the repeated local twitch response fade away or the subject reported too much pain, the needle was removed. After the treatment, a 15 minutes break(51) was set up and the subjects were not permitted to use a hot pack or to stretch the muscle. |
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| Sham needling (SN) group | Sham Comparator | The SN technique was similar to DN, except for penetrating the muscle. In this technique, the needle only penetrated the skin and was therefore impossible to provoke a local twitch response. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Dry Needling | Other |
| ||
| Sham Needling |
| Measure | Description | Time Frame |
|---|---|---|
| Pain sensation | Measured with a Visual Analogue Scale, scored from 0 to 100, where higher scores indicate higher pain sensation. | Change from baseline pain sensation at 15minutes postintervention |
| Pain sensation | Measured with the Knee Osteoarthritis Outcome Score- subscale pain, scored on a scale from 0 to 36, transferred from 0 to 100. Higher scores indicate a higher pain sensation. | Change from baseline pain sensation at 15minutes postintervention |
| Pain sensation | Measured with a Visual Analogue Scale, scored from 0 to 100, where higher scores indicate higher pain sensation. | Change from baseline pain sensation at 3days postintervention |
| Pain sensation | Measured with the Knee Osteoarthritis Outcome Score- subscale pain, scored on a scale from 0 to 36, transferred from 0 to 100. Higher scores indicate a higher pain sensation. | Change from baseline pain sensation at 3days postintervention |
| Pain sensation | Measured with a Visual Analogue Scale, scored from 0 to 100, where higher scores indicate higher pain sensation. | Change from 15minutes postintervention pain sensation at 3days postintervention |
| Pain sensation | Measured with the Knee Osteoarthritis Outcome Score- subscale pain, scored on a scale from 0 to 36, transferred from 0 to 100. Higher scores indicate a higher pain sensation. | Change from 15minutes postintervention pain sensation at 3days postintervention |
| Measure | Description | Time Frame |
|---|---|---|
| Muscle coactivation of musculus Vastus medialis and musculus Semitendinosus | Measured with wireless surface electromyography. Muscle activation patterns will be gathered through surface electrodes. Hereafter, the co-contraction index was calculated. Higher percentages indicate higher coactivation. | Change from baseline muscle coactivation at 15minutes postintervention |
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Inclusion Criteria:
A minimum age of fifty years old;
Diagnosed with KOA based on the American College of Rheumatology (ACR) clinical classification criteria(48), including:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Sophie Vervullens | Universiteit Antwerpen | Principal Investigator |
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| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 34821140 | Derived | Vervullens S, Meert L, Baert I, Delrue N, Heusdens CHW, Hallemans A, Van Criekinge T, Smeets RJEM, De Meulemeester K. The effect of one dry needling session on pain, central pain processing, muscle co-contraction and gait characteristics in patients with knee osteoarthritis: a randomized controlled trial. Scand J Pain. 2021 Sep 30;22(2):396-409. doi: 10.1515/sjpain-2021-0091. Print 2022 Apr 26. |
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| Type | Date | Date Unknown |
|---|---|---|
| Release | Dec 20, 2023 | |
| Reset | Jun 20, 2024 | |
| Release | Jun 21, 2024 | |
| Reset | Oct 3, 2024 |
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| Release Date | Unrelease Date | Unrelease Date Unknown | Reset Date | MCP Release Number |
|---|---|---|---|---|
| Dec 20, 2023 | Jun 20, 2024 | |||
| Jun 21, 2024 |
| ID | Term |
|---|---|
| D020370 | Osteoarthritis, Knee |
| D010146 | Pain |
| ID | Term |
|---|---|
| D010003 | Osteoarthritis |
| D001168 | Arthritis |
| D007592 | Joint 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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One group will receive dry needling session and one group will receive placebo treatment. A simple randomization on a website (www.randomizer.org) performed by a researcher (IB), independent from the executive researchers.
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A double-blinded study was achieved by giving no information about the assigned intervention to the executive researchers; and only the same general explanation about the intervention type to the subjects (Appendix A). Moreover, subjects were prohibited to see the needling-intervention. The group allocation was solely known by the treating therapists and the independent researcher (IB).
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| Pain pressure thresholds | Measured with an digital algometer (kilogram force/ square cm) | Change from baseline central pain processing at 15minutes postintervention |
| Temporal summation | Measured with an digital algometer (kilogram force/ square cm) | Change from baseline central pain processing at 15minutes postintervention |
| Conditioned pain modulation | Measured with an digital algometer (test stimulus) and an inflatable cuff (conditioning stimulus). (kilogram force/ square cm) | Change from baseline central pain processing at 15minutes postintervention |
| Muscle coactivation of musculus Vastus medialis and musculus Biceps femoris | Measured with wireless surface electromyography. Muscle activation patterns will be gathered through surface electrodes. Hereafter, the co-contraction index was calculated. Higher percentages indicate higher coactivation. | Change from baseline muscle coactivation at 15minutes postintervention |
| Muscle coactivation of musculus Vastus lateralis and musculus Semitendinosus | Measured with wireless surface electromyography. Muscle activation patterns will be gathered through surface electrodes. Hereafter, the co-contraction index was calculated. Higher percentages indicate higher coactivation. | Change from baseline muscle coactivation at 15minutes postintervention |
| Muscle coactivation of musculus Vastus lateralis and musculus Biceps femoris | Measured with wireless surface electromyography. Muscle activation patterns will be gathered through surface electrodes. Hereafter, the co-contraction index was calculated. Higher percentages indicate higher coactivation. | Change from baseline muscle coactivation at 15minutes postintervention |
| Muscle coactivation of musculus Tibialis anterior and musculus Gastrocnemius medialis | Measured with wireless surface electromyography. Muscle activation patterns will be gathered through surface electrodes. Hereafter, the co-contraction index was calculated. Higher percentages indicate higher coactivation. | Change from baseline muscle coactivation at 15minutes postintervention |
| Muscle coactivation of musculus Tibialis anterior and musculus Gastrocnemius lateralis | Measured with wireless surface electromyography. Muscle activation patterns will be gathered through surface electrodes. Hereafter, the co-contraction index was calculated. Higher percentages indicate higher coactivation. | Change from baseline muscle coactivation at 15minutes postintervention |
| Stride time (seconds) | measured with force plates and markers to measure toe off and heel strike during a 3D motion analysis. | Change from baseline muscle coactivation at 15minutes postintervention |
| Stride length (meters) | measured with force plates and markers to measure toe off and heel strike during a 3D motion analysis. | Change from baseline muscle coactivation at 15minutes postintervention |
| Step time (meters/second) | measured with force plates and markers to measure toe off and heel strike during a 3D motion analysis. | Change from baseline muscle coactivation at 15minutes postintervention |
| Stance phase (%) | measured with force plates and markers to measure toe off and heel strike during a 3D motion analysis. | Change from baseline muscle coactivation at 15minutes postintervention |
| Step length (meters) | measured with force plates and markers to measure toe off and heel strike during a 3D motion analysis. | Change from baseline muscle coactivation at 15minutes postintervention |
| Step width (meters) | measured with force plates and markers to measure toe off and heel strike during a 3D motion analysis. | Change from baseline muscle coactivation at 15minutes postintervention |
| Oct 3, 2024 |
| D012216 |
| Rheumatic Diseases |
| D009461 | Neurologic Manifestations |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |