Multiple Knuckle-Joint
Finger Movement Symbols




Hinge Unit

Knuckle-Joints Hinge Open & Close Keeping Fingers Together

The fingers move together in the same direction, as a unit. The knuckle-joints of the fingers open and close (bend up and down) together.

This open-close knuckle movement is written with one row of small connected arrows pointing up and down.





Hinge Trills

Knuckle-Joints Hinge Open & Close While Fingers Alternate

The fingers move in opposite directions. One moves up, as the other moves down. This is called alternating.

This alternating knuckle movement symbol is written with two rows of small arrows pointing up and down.