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EMG-Triggered Electrical Stimulation After Median/Ulnar Nerve Repairs
Sponsor: Pamukkale University
Summary
Immobilization following median and/or ulnar nerve repairs results in strength loss in the wrist and finger extensor muscles. Given the critical importance of wrist extension for functional grip, this condition significantly restricts hand functions. Therefore, this study aims to investigate the effects of EMG-triggered electrical stimulation applied to the wrist and finger extensors, in addition to conventional physiotherapy, on functional outcomes in patients undergoing median and/or ulnar nerve repair, with the objective of restoring extensor muscle weakness induced by immobilization.
Official title: The Impact of EMG-Triggered Electrical Stimulation of Extensor Muscles on Functional Status Following Median and/or Ulnar Nerve Repairs: A Single-Blind, Randomized Controlled Study
Key Details
Gender
All
Age Range
18 Years - 65 Years
Study Type
INTERVENTIONAL
Enrollment
26
Start Date
2026-04-30
Completion Date
2027-11-30
Last Updated
2026-04-16
Healthy Volunteers
No
Interventions
EMG-triggered electrical stimulation
This group will receive EMG-triggered electrical stimulation therapy in addition to conventional physiotherapy in the 5th week.The EMG-triggered electrical stimulation protocol will be conducted over 12 sessions (3 days/week for 4 weeks). Surface electrodes will be placed parallel to the fibers of the wrist and finger extensors-specifically the EDC, ECRL/B, and ECU-using anatomical landmarks and palpation. Following a baseline calibration (5s contraction/10s rest) to establish a microvolt threshold, the device will require active cognitive participation from the patient to initiate stimulation. Once the threshold is exceeded, stimulation will be delivered at 60 Hz with a 300 µS pulse width and 0.5s ramp times. The procedure involves 10 repetitions per muscle, utilizing a 10s contraction and 30s rest cycle to enhance functional recovery.
Conventional physiotherapy group
The conventional physiotherapy program will comprise splinting, edema control, range of motion exercises, and resistance training.