WatchME Instructional Video: Ultrasound-Guided Botulinum Toxin Injections with Needle In-Plane: Lower Limb Targets-Lower Limb Section 4 Augmentation of Ultrasound Guidance.mp4

Lower Limb Section 4 Augmentation of Ultrasound Guidance.mp4

Video Transcription

Video Summary

Ultrasound guidance can be enhanced with muscle movement and electrical stimulation to locate the target muscle. The video demonstrates passive flexion of the lateral four toes, showing the movement of the flexor digitorum longus muscle on ultrasound. Electrical stimulation produces similar rhythmic movements and can also cause visible joint movement. Electromyography (EMG) can be used in addition to ultrasound once the needle is believed to be in the target muscle. EMG guidance involves gently stretching the spastic muscle to observe an increase in motor unit action potentials, which confirms the correct placement of the needle. This is particularly useful when electrical stimulation is not possible or could cause strong muscle spasms.

Keywords

ultrasound guidance

muscle movement

electrical stimulation

flexor digitorum longus muscle

electromyography (EMG)