AIM:
To increase wrist extension strength using EMG biofeedback (for paralysed/ very weak muscles)
Rationale:
EMG biofeedback (measurement of the electrical response of the muscles when contracting) is used to strengthen paralysed/very weak muscles.
Equipment:
- Table/adjustable height plinth
- Chair
- Electromyographic (EMG) biofeedback machine and electrodes
Conducting gel, “Micropore” tape, alcohol wipes (not shown in video)
Key Points:
- Patient positioned in sitting, forearm pronated and supported on plinth
- Therapist applies electrodes (not shown in video):
- uses alcohol wipes to rub the skin over the wrist extensor muscle belly
- places electrode onto the belly of the wrist extensor muscles
- Ensure the 2 electrodes are close but not touching each other
- Therapist adjusts threshold and sensitivity settings on the EMG machine
Common Errors:
- Therapist does not tape electrodes securely
Progression and Variety:
- Increase threshold setting on the EMG machine
- Decrease sensitivity settings on the EMG machine