Muscle Joint Action Guide (MJAG) from BTE

Get the quick and easy joint movement and innervation reference tool – for free!

No more searching for which muscle group, spinal segment, or nerve activates a certain joint movement. This free hand-held reference tool tells you everything you need to know, instantly.

Slide it!

Choose from 26 different joint-specific movements, both upper and lower extremity. With one quick and easy slide, you’ll see each movement’s activated muscle groups, spinal segment, and innervation.

Joint Movement

Select a Joint Movement

Use the slider to select a joint-specific movement, like Elbow Flexion.Learn more

Engaged Muscle Groups

Engaged Muscle Groups

The slider will show you which muscle groups perform the selected joint movement.Learn more

Spinal Segment Location

Spinal Segment Location

You’ll see the coordinating spinal segment for each engaged muscle group.Learn more

Controlling Nerve

Controlling Nerve

You’ll also see which nerve controls the engaged muscle group.Learn more

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