Great reply thanks and thanks for the kind thoughts.
I don’t know about the mechanism of this particular crash. My riding friends weren’t close enough to give me any detail. I would say I was travelling at about 15 mph.
I know I bounced off the top of head, I was wearing a full face which was nearly new and that has done great job of protecting my head it has a nice dent right on the top of the head. I 360‘d end over end a couple of times. The rib fractures are all at the rear of my rib cage in line with where the battery was. The vertebra fractured is T4.
More than that it is difficult for me to be able to give the exact reasons for the injuries.
I won’t be carrying a battery on my back on technical trails anymore. But everyone else has to make their own informed decision.
I could have had a pack with an integrated back protector in addition to the POC that would have been better still. The POC has great coverage of the back I wear it with the chest plate as well. They are comfortable to wear and don’t move around.
it was still perfectly in place when the ambulance staff removed it and between the batteries and the injuries so it is my view that the fact it isn’t integral didn’t contribute to the injuries but as I know nothing about the mechanism of trauma in this sort of case I have no idea if my view is totally wrong or not.
cheers all
Ian