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

Video Transcription

Ultrasound guidance may be augmented with passive muscle movement and or electrical stimulation to identify the target muscle.  The practitioner is performing passive flexion of the thumb. On ultrasound, you can see the movement of the flexor pollicis longus muscle at the bottom of the screen.  With electrical stimulation, you will see similar rhythmic movements of the target muscle on ultrasound.  In addition to the contraction seen on ultrasound, you may see gross movement of the affected joint.  For example, in this case, you can visualize flexion of the thumb as the flexor pollicis longus is being stimulated.

Video Summary

Ultrasound guidance can be enhanced by using passive muscle movement and electrical stimulation to locate the target muscle. In the video, the practitioner is flexing the thumb to activate the flexor pollicis longus muscle. This movement is visible on ultrasound as the muscle contracts at the bottom of the screen. When electrical stimulation is applied, you can observe similar rhythmic movements of the target muscle on ultrasound. Along with the muscle contraction, there may also be noticeable movement in the affected joint. For instance, in this case, the flexion of the thumb is evident as the flexor pollicis longus muscle is stimulated.

Keywords

ultrasound guidance

passive muscle movement

electrical stimulation

target muscle

muscle contraction