I'm Aoi Hashima , an occupational therapist working in Saga Sumai and Fukuoka.
During recovery from a paralyzed hand, some people may not be able to lift their arms on their own, but can move their fingers a little.
As shown in the video, at this point you can lift the paralyzed hand with your other hand and gently move the fingers of the paralyzed hand in the air.
If the paralyzed hand is dangling, the torque (force) applied to the finger joints is very small, so I think this is an easy position to move the fingers that have started to move slightly.
As for the wrist, the load of the entire hand is easily applied to the wrist, so it is less likely to move than the fingers.
When you can move the fingers of a paralyzed hand like a video, I would like you to introduce a menu as a voluntary training. 
We recommend that you practice lifting with something that can sit stably on the table and that you can create a clasp on the part you are holding.
As shown in the video, lift the paralyzed hand with your other hand, place it directly over the object you want to lift, bring your fingers close to the object, and lift it up.
With this method, the area available to the paralyzed hand is limited to the fingers, and all fingers move the same (no need for separability), so I think it's low difficulty and easy to introduce.
Also, I think that because you can experience "holding things", you will be able to create opportunities to use the paralyzed hand in everyday life.
In the video, I use a stick container for pain relief.
There is a slight bump between the lid and the body, so fingers can easily get caught in the container, and it can be grasped by friction, so it is useful as a self-learning tool at home.
When I felt like my fingers weren't gripping enough, I added a rubber band for extra friction.
As an app, I think square containers are fine too.
I would appreciate if you could think of such a way as one of the voluntary training menus.
☆*:.｡. Thank you for reading to the end.｡.:*☆
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This article was reprinted on October 10, 2022 on Aoi Hashima 's blog " Stroke Rehabilitation Longevity Consultation Center " .