Some surgeons will consider a partial wrist fusion or arthrodesis. Studies show it isn't always a reliable way to get pain relief. It may preserve some motion but patients report that doesn't mean they can use the wrist.
Motions like wiping after going to the bathroom and using the hand in small spaces remain difficult tasks. Other activities such as writing, using a hammer, or lifting objects over the head can also be difficult if not impossible.
Discuss all the pros and cons of partial versus complete wrist fusion with your surgeon before deciding.