Linda Mae ~
Unfortunately, there really isn't a clear-cut answer to your question. Every AN surgery patient has a slightly different experience with regaining their balance ability. If the nerve has been compromised for some time by the AN, the person's brain may have already compensated and regaining balance won't be difficult, even with the nerve cut. However, that isn't always the case. Some AN surgery patients find riding an ordinary bicycle to be a challenge. Riding a 500 to 700+ pound motorcycle at highway speeds could be an insurmountable hurdle for some yet quite possible for others, depending on their sense of balance, post-op. I would be skeptical about riding a motorcycle after AN surgery, at least for some time. Some 'practice runs' (in deserted parking lots, then on back roads) would be a good idea. That would let the prospective rider know what their balance will allow and if riding a motorcycle is advisable, post-op.
Jim
