Medical
i'm writing a story and i want to know what would happen in this scenario.
an animal trainer gets scratched in the arm by a lion and it rips into the skin and muscles of the top of the forearm.
what is the possibility that they lose the power to move their hand/wrist, and would there be any way for doctors to surgically fix it besides just putting the muscles and skin back together?

Well, you could certainly lose the use of the hand and possibly wrist.  However, modern repair techniques would probably be effective unless the damage was very extensive.

Generally, if the damage is basic, repairs are done with a local or general anaesthetic, suturing the torn ligaments and layers together.

If the damage is more serious, sometimes micro surgery is required, using a microscope thew surgeon looks into while working.  This can repair nerves, ligaments, muscles or blood vessels.

In either case, the patient would need a tetanus jab, lots of antiseptic, sutures visible on the skin, and probably some bandaging.

Is that enough?

Keeps you from getting lung cancer from smoking