Finger tendon gliding exercises are used in physiotherapy to rehabilitate an injured ligaments, muscles or tendons in the hand or wrist. These exercises include transitioning your hand between specific hand positions including the:

relaxed, straight, duck, hook, flat fist, and full fist, and tabletop positions.

STRAIGHT
DUCK
HOOK
FLAT FIST
FULL FIST
TABLE TOP

This is important because all of these positions are used by physiotherapists because they activate the hand tendons and require a level of strength from your forearm muscles to be able to do these movements properly.

These positions require effort to hold therefore these are great for training your hand back into working condition, but I should stay away from designing any concept or form that requires the user to make any of these positions.

SOURCES

S. (2015, July 29). Tendon Gliding – Southlake Hand Therapy. Retrieved November 27, 2020, from https://www.youtube.com/watch?v=dUhjUBAQv30