Originally Posted by: JeffS65A finger injury...
... my ring finger and pinky stayed hooked in to the handle, hyperextending and essentially spraining my fingers.

Ouch. :( Sorry to hear.

The few times I've injured a finger or hand I worked on other things. Compose on score paper, transcribe solos by ear, read sheet music and try to sing or mentally "hear" the music, work solely on the technique of the uninjured hand, etc.

Here's to a speedy & full recovery!