Let me guess. After the accident you fell off your mountain bike and whipped you whiplash in the other direction...or...after 20 years of falls and spills while mountain biking the whiplash pain is mild in comparison to the lingering effects of all your broken bones?
No actually it happened OVERNIGHT...after a year of pain my hub decided I needed a mtn bike (I had been told I would not likely be riding bikes again at all)...took me on a 17 mile trail ride...got home...bad pain...iced it...went to bed...
In the a.m....all my year long problems were gone! Have not returned.
.been about 22 years