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High-Intensity Peripheral Magnetic Stimulation in Traumatic Peripheral Nerve Injury

13. července 2026 aktualizováno: Nurdan Korkmaz, Gaziler Physical Medicine and Rehabilitation Education and Research Hospital

Clinical and Electrophysiological Evaluation of the Effect of High-Intensity Peripheral Magnetic Stimulation in Traumatic Peripheral Nerve Injury: A Randomized, Double-Blind, Sham-Controlled Trial

Traumatic peripheral nerve injury is a common cause of chronic neuropathic pain, muscle weakness, and functional limitation, particularly in young and active individuals. Current conservative and pharmacological treatments often provide incomplete relief or carry side effects. High-intensity peripheral magnetic stimulation (PMS) is a non-invasive method that may help reduce neuropathic pain and support motor recovery, but evidence in traumatic nerve injury is limited.

This randomized, double-blind, sham-controlled trial aims to evaluate whether high-intensity PMS, added to a standardized therapeutic exercise program, improves pain, function, quality of life, and electrophysiological measures in adults with traumatic peripheral nerve injury. Participants will be randomly assigned to receive either active PMS or sham PMS, in addition to the same exercise program. Outcomes will be assessed at baseline, 4 weeks, and 8 weeks.

Přehled studie

Postavení

Zatím nenabíráme

Podmínky

Intervence / Léčba

Detailní popis

This is a prospective, randomized, double-blind, sham-controlled clinical trial conducted at a single center. Adults aged 18-65 years with unilateral traumatic peripheral nerve injury confirmed by electromyography, with symptom onset at least 3 months prior, neuropathic pain (DN4 ≥ 4), pain severity (VAS ≥ 4), and reduced muscle strength (MRC < 5) will be enrolled.

Participants will be randomly allocated using computer-generated randomization to one of two groups: (1) active high-intensity PMS plus a standardized therapeutic exercise program, or (2) sham PMS plus the same exercise program. Active stimulation will be delivered using a high-intensity magnetic stimulation system with a predefined neuropathy protocol (approximately 10 minutes per session, variable frequencies 1-60 Hz) applied over the injured peripheral nerve, for a total of 9 sessions over 3 weeks (3 sessions per week). In the sham group, the applicator coil will be reversed to prevent effective delivery of the magnetic field, while device screen and audible feedback are maintained. Both groups will receive an individualized exercise program (active range of motion, strengthening, stretching, proprioception and balance exercises, and occupational therapy) for 20 minutes per day, 5 days per week, over 3 weeks.

Participants and outcome assessors will be blinded to group allocation. The physiotherapist delivering the intervention will be aware of allocation but will not participate in assessments. Electrophysiological evaluations will be performed by a blinded electroneurophysiologist.

The primary outcome is pain severity measured by the Visual Analog Scale (VAS). Secondary outcomes include the Douleur Neuropathique 4 (DN4) questionnaire, the Brief Pain Inventory (BPI), the Nottingham Health Profile (NHP), Manual Muscle Testing (MRC scale), and electrophysiological parameters including compound muscle action potential (CMAP) amplitude, distal latency, nerve conduction velocity (NCV), and quantitative motor unit potential (MUP) analysis. Assessments will be performed at baseline (week 0), week 4, and week 8. A total of 40 participants (20 per group) is planned based on an a priori sample size calculation.

Typ studie

Intervenční

Zápis (Odhadovaný)

40

Fáze

  • Nelze použít

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní kontakt

Studijní místa

  • Turecko (Türkiye)
      • Ankara, Turecko (Türkiye), 06800
        • Gaziler Physical Medicine and Rehabilitation Education and Research Hospital
        • Kontakt:

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

  • Dospělý
  • Starší dospělý

Přijímá zdravé dobrovolníky

Ne

Popis

Inclusion Criteria:

  • Age between 18 and 65 years
  • Traumatic peripheral nerve injury
  • Unilateral traumatic peripheral neuropathy confirmed by electromyography (EMG)
  • Nerve injury occurring at least 3 months prior
  • Douleur Neuropathique 4 (DN4) score ≥ 4
  • Visual Analog Scale (VAS) score ≥ 4
  • Manual Muscle Testing score < 5
  • No analgesic use, or stable analgesic therapy for the past month (no dose changes)

Exclusion Criteria:

  • Active infection or malignancy
  • Metal implant or shrapnel in the application area
  • Electronic implants (e.g., cardiac pacemaker, spinal cord stimulator, deep brain stimulator)
  • Central nervous system diseases
  • Non-traumatic causes of neuropathy (e.g., radiculopathy, diabetic neuropathy, entrapment neuropathies, HIV-related neuropathy, trigeminal neuralgia)
  • Complete nerve injury
  • Injury involving three or more peripheral nerves or plexus injury
  • History of peripheral nerve surgery or injection within the past 3 months
  • Active psychiatric illness
  • Coagulopathy

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

  • Primární účel: Léčba
  • Přidělení: Randomizované
  • Intervenční model: Paralelní přiřazení
  • Maskování: Dvojnásobek

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Experimentální: Active PMS plus Therapeutic Exercise
Participants receive high-intensity peripheral magnetic stimulation (PMS) applied over the injured peripheral nerve using a predefined neuropathy protocol (approximately 10 minutes per session, variable frequencies 1-60 Hz), for a total of 9 sessions over 3 weeks (3 sessions per week). Stimulation intensity is increased until motor activity is elicited and kept constant during the session. In addition, participants receive a standardized therapeutic exercise program (active range of motion, strengthening, stretching, proprioception and balance exercises, and occupational therapy) for 20 minutes per day, 5 days per week, over 3 weeks.
Přístroj: High-Intensity Peripheral Magnetic Stimulation
High-intensity peripheral magnetic stimulation delivered via an inductive coil placed over the injured peripheral nerve, using a predefined neuropathy protocol (approximately 10 minutes per session, variable frequencies 1-60 Hz). Stimulation intensity is increased until motor activity is elicited and kept constant during the session. Applied 3 times per week for 3 weeks (9 sessions total).
Jiný: Therapeutic Exercise Program
Standardized individualized therapeutic exercise program including active range of motion exercises, strengthening exercises, stretching exercises, proprioception and balance exercises, and occupational therapy for activities of daily living. Delivered for 20 minutes per day, 5 days per week, over 3 weeks.
Falešný srovnávač: Sham PMS plus Therapeutic Exercise
Participants receive sham peripheral magnetic stimulation using the same device, session duration, and application site, but with the applicator coil reversed to prevent effective delivery of the magnetic field to the target tissue. Device screen and audible feedback are maintained to preserve blinding. In addition, participants receive the same standardized therapeutic exercise program (active range of motion, strengthening, stretching, proprioception and balance exercises, and occupational therapy) for 20 minutes per day, 5 days per week, over 3 weeks.
Jiný: Therapeutic Exercise Program
Standardized individualized therapeutic exercise program including active range of motion exercises, strengthening exercises, stretching exercises, proprioception and balance exercises, and occupational therapy for activities of daily living. Delivered for 20 minutes per day, 5 days per week, over 3 weeks.
Přístroj: Sham Peripheral Magnetic Stimulation
Sham peripheral magnetic stimulation using the same device, session duration, and application site, with the applicator coil reversed to prevent effective delivery of the magnetic field to the target tissue. Device screen and audible feedback are maintained to preserve blinding. Applied 3 times per week for 3 weeks (9 sessions total).

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Change in Pain Severity Measured by Visual Analog Scale (VAS)
Časové okno: Baseline, week 4, and week 8
Pain severity assessed using the Visual Analog Scale (VAS), a 0-10 cm scale where 0 indicates "no pain" and 10 indicates "unbearable pain." Higher scores indicate greater pain severity.
Baseline, week 4, and week 8

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Change in Neuropathic Pain Assessed by Douleur Neuropathique 4 (DN4)
Časové okno: Baseline, week 4, and week 8
Neuropathic pain assessed using the Douleur Neuropathique 4 questionnaire, a 10-item instrument based on patient-reported symptoms and clinical examination findings. Scores range from 0 to 10, with a total score of 4 or higher indicating neuropathic pain. Higher scores indicate a worse outcome.
Baseline, week 4, and week 8
Change in Pain Severity and Interference Assessed by Brief Pain Inventory (BPI)
Časové okno: Baseline, week 4, and week 8
Pain severity and pain interference assessed using the Brief Pain Inventory Short Form. Pain severity is scored from 0 to 10 (0 = no pain, 10 = pain as bad as you can imagine) and pain interference is scored from 0 to 10 (0 = does not interfere, 10 = completely interferes) across general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life. Higher scores indicate a worse outcome.
Baseline, week 4, and week 8
Change in Health-Related Quality of Life Assessed by Nottingham Health Profile (NHP)
Časové okno: Baseline, week 4, and week 8
Health-related quality of life assessed using the Nottingham Health Profile. Each of the six sections (pain, physical mobility, energy level, sleep, social isolation, and emotional reactions) is scored from 0 to 100. Higher scores indicate a worse outcome (greater impairment in quality of life).
Baseline, week 4, and week 8
Change in Muscle Strength Assessed by Manual Muscle Testing (MRC Scale)
Časové okno: Baseline, week 4, and week 8
Muscle strength assessed by manual muscle testing using the Medical Research Council scale in muscle groups innervated by the affected peripheral nerve. Scores range from 0 (no visible contraction) to 5 (full strength against resistance). Higher scores indicate a better outcome.
Baseline, week 4, and week 8
Change in Compound Muscle Action Potential (CMAP) Amplitude
Časové okno: Baseline, week 4, and week 8
CMAP amplitude of the affected nerve measured by nerve conduction studies, reported in millivolts (mV). Higher values indicate better motor nerve function.
Baseline, week 4, and week 8
Change in Distal Motor Latency
Časové okno: Baseline, week 4, and week 8
Distal motor latency of the affected nerve measured by nerve conduction studies, reported in milliseconds (ms). Higher values indicate worse nerve conduction.
Baseline, week 4, and week 8
Change in Nerve Conduction Velocity (NCV)
Časové okno: Baseline, week 4, and week 8
Motor nerve conduction velocity of the affected nerve measured by nerve conduction studies, reported in meters per second (m/s). Higher values indicate better nerve conduction.
Baseline, week 4, and week 8
Change in Mean Motor Unit Potential (MUP) Duration
Časové okno: Baseline, week 4, and week 8
Mean duration of motor unit potentials in the affected muscle, assessed by quantitative needle electromyography and reported in milliseconds (ms). Increased duration indicates chronic reinnervation.
Baseline, week 4, and week 8
Change in Mean Motor Unit Potential (MUP) Amplitude
Časové okno: Baseline, week 4, and week 8
Mean amplitude of motor unit potentials in the affected muscle, assessed by quantitative needle electromyography and reported in microvolts (µV). Increased amplitude indicates chronic reinnervation.
Baseline, week 4, and week 8

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Gaziler Physical Medicine and Rehabilitation Education and Research Hospital

Vyšetřovatelé

  • Vrchní vyšetřovatel: Nurdan Korkmaz, Gaziler Physical Medicine and Rehabilitation Education and Research Hospital

Publikace a užitečné odkazy

Osoba odpovědná za zadávání informací o studiu tyto publikace poskytuje dobrovolně. Mohou se týkat čehokoli, co souvisí se studiem.

Obecné publikace

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia (Odhadovaný)

1. srpna 2026

Primární dokončení (Odhadovaný)

1. června 2027

Dokončení studie (Odhadovaný)

1. července 2027

Termíny zápisu do studia

První předloženo

7. července 2026

První předloženo, které splnilo kritéria kontroly kvality

13. července 2026

První zveřejněno (Aktuální)

15. července 2026

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

15. července 2026

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

13. července 2026

Naposledy ověřeno

1. července 2026

Více informací

Termíny související s touto studií

Klíčová slova

Další relevantní podmínky MeSH

Další identifikační čísla studie

  • AEŞH-EK-2026-112

Plán pro data jednotlivých účastníků (IPD)

Plánujete sdílet data jednotlivých účastníků (IPD)?

NE

Informace o lécích a zařízeních, studijní dokumenty

Studuje lékový produkt regulovaný americkým FDA

Ne

Studuje produkt zařízení regulovaný americkým úřadem FDA

Ne

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