Hi, thanks for writing to HCM.
I feel that you have received an appropriate treatment in the form of
ganglion removal followed by
bone grafting.
A certain amount of numbness is commonly encountered over the radial styloid and over the thumb after a surgery over the
scaphoid bone. This is due to an injury to the superficial cutaneous branch of
radial nerve lying in that area.
Hope this information is helpful. Good day