 [ Symptoms ] what new treatments are on the horizon for osteoporosis [ Disease ] i do not have any way of evaluating the extent of your nerve injury but think of peripheral nerves in the fingers as branches of a tree not just the main trunk of the radial nerve you may have only cut a small branch    one of several going down the thumb    in which case it may be near impossible to reattach but may reattach naturally over time since both ends are very close the thumb is very important so having a hands on no pun intended opinion from an orthopedic hand surgeon is vital and the sooner the better wounds should be sutured in less than eight hours to help prevent infection but it can be easily opened again by the hand surgeon days later so do not panic fyi webmd health experts on not on line 247 like an answering service so it would be best not to use webmd answers when asap or rapid responses are required