Benjamin,

I think you nailed it in your last line. Like Hockey, I am very sensitive to impact or motion. I cannot tolerate a rough road.

Try this. Get some foam ear plugs. Roll them up real tight and insert them in deep enough for maximum noise blocking.

Now, go for a short jog. You will be able to hear the impact in your ears.

Try walking and jogging to find a gait that does not cause the impact sound. You may need to buy some high end running shoes. The new shoes with the rounded heels are designed to change how your foot plants. They also exercise different muscles. There are also shoes with metal springs in the heels.

This will likely be a condition you will live with the rest of your life. If not always, then it may be a recurring condition.

My life changing injury was a vertical impact. It is not uncommon for the spine to transmit 20 to 60 G's to the head.

Learning a new running gait will also make your hips and knees last much longer. So, it is a good change to make.