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Appendix 4 Excluded studies with justification for exclusion

From: The efficacy of intramuscular electrical stimulation in the management of patients with myofascial pain syndrome: a systematic review

First author

(year)

Title

Reason for exclusion

Stalberg

1987

Intramuscular Stimulation for The Study of Individual Motor End-Plates and Muscle Fibers

Conference paper

Wright

1991

Morphologic and Histochemical Characteristics of Skeletal Muscle After Long-Term Intramuscular Electrical Stimulation

It was not a trial study

Arendt-Nielsen

1998

Assessment Of Muscle Pain in Humans: Clinical and Experimental Aspects

Conference paper

Chu

1999

The Role of The Monopolar Electromyographic Pin in Myofascial Pain Therapy: Automated Twitch-Obtaining Intramuscular Stimulation (ATOIMS) And Electrical Twitch-Obtaining Intramuscular Stimulation (ETOIMS)

Combine IMES with another treatment without control group

Chu

2000

Early Observations in Radiculopathic Pain Control Using Electrodiagnostically Derived New Treatment Techniques: Automated Twitch-Obtaining Intramuscular Stimulation (ATOIMS) And Electrical Twitch-Obtaining Intramuscular Stimulation (ETOIMS)

Combine IMES with another treatment without control group

Gunn

2001

Treating Whiplash-Associated Disorders with Intramuscular Stimulation: A Retrospective Review Of 43 Patients with Long-Term Follow-Up

No electrical stimulation by needle

Karakurum

2001

The ‘Dry-Needle Technique’: Intramuscular Stimulation in Tension Type Headache

No electrical stimulation by needle

Chu

2002

The Efficacy of Automated/Electrical Twitch Obtaining Intramuscular Stimulation (Atoims/Etoims) For Chronic Pain Control: Evaluation with Statistical Process Control Method

Combine IMES with another treatment without control group

Kosek

2003

Perceptual Integration of Intramuscular Electrical Stimulation in The Focal and The Referred Pain Area in Healthy Humans

No electrical stimulation by needle

Chu

2004

Electrical Twitch-Obtaining Intramuscular Stimulation in Lower Back Pain

It was not a randomized control trial

Ga

2007

Intramuscular And Nerve Root Stimulation Vs Lidocaine Injection of Trigger Points in Myofascial Pain Syndrome

No electrical stimulation by needle

Lee

2008

Effects Of Needle Electrical Intramuscular Stimulation on Shoulder and Cervical Myofascial Pain Syndrome and Microcirculation

It was not a randomized control trial

Chu

2008

Etoims Twitch Relief Method in Chronic Refractory Myofascial Pain (CRMP)

No electrical stimulation by needle

Valeriani

2008

Nociceptive Contribution to The Evoked Potentials After Intramuscular Electrical Stimulation

The intervention was not on myofascial pain

Hong-You

2009

Increased H-Reflex Induced by Intramuscular Electrical Stimulation of Latent Myofascial Trigger Point

It was not a trial study

Rainey

2013

The Use of Trigger Point Dry Needling and Intramuscular Electrical Stimulation for A Subject with Chronic Low Back Pain: A Case Report

Combine IMES with another treatment without control group

Jodic

2014

Treatment Of Nonspecific Thoracic Spine Pain with Trigger Point Dry Needling and Intramuscular Electrical Stimulation: A Case Series

It was not a randomized control trial

Borg-Stein

2014

Myofascial Pain Syndrome Treatments

It was not a trial study

Couto

2014

Paraspinal Stimulation Combined with Trigger Point Needling and Needle Rotation for The Treatment of Myofascial Pain: A Randomized Sham-Controlled Clinical Trial

No electrical stimulation by needle

Shin

2014

Intramuscular Stimulation of Peri cranial Myofascial Trigger Points in The Treatment of Frequent Episodic Tension-Type Headache

Conference paper

Fogelman

2015

Efficacy Of Dry Needling for Treatment of Myofascial Pain Syndrome

No electrical stimulation by needle

Chu

2015

Twitch-Obtaining Intramuscular Stimulation: Observations in The Management of Radiculopathic Low Back Pain

The intervention was not on myofascial pain

Calatayud

2016

Improvement Of Myofascial Pain in Equine Brachiocephalicus Muscle Using Dry Needling Technique, A Clinical Commentary

Conference paper

Shanmugam

2016

Effects Of Intramuscular Electrical Stimulation Using Inversely Placed Electrodes on Myofascial Pain Syndrome in Shoulder—A Case Series

It was not a randomized control trial

Ratmansky

2016

Position Statement of The Israeli Society for Musculoskeletal Medicine on Intramuscular Stimulation for Myofascial Pain Syndrome- A Delphi Process

It was not a trial study

Mazloum

2017

Comparative Effects of Dry Needling and Intramuscular Electrical Stimulation with And Without Kinesiology Taping in Patients with Non-Specific Chronic Low Back Pain

Conference paper

Graca-Tarrago

2019

Intramuscular Electrical Stimulus Potentiates Motor Cortex Modulation Effects on Pain and Descending Inhibitory Systems in Knee Osteoarthritis: A Randomized, Factorial, Sham-Controlled Study

The intervention was not on myofascial pain

Moon

2019

Intramuscular Stimulation as A Novel Alternative Method of Pain Management After Thoracic Surgery

The intervention was not on myofascial pain

Kim

2019

A New Treatment Modality for The Postoperative Muscular Pain Management in Pylorus Preserving Pancreaticoduodenectomy: A Double-Blind Randomized Control Trial

Conference paper