Back in the we had a customer who woke up the ICU with no clue as to how he got there. He only rembers riding down a back country road. All his tests were negative and he was really freaking out because nobody could figure out why he blacked out and crashed.

I said, "Larry, relax, your fine." To which he replied, "what do mean, the docs couldnt find anything?" "I found this in your front wheel," and handed him a big chunk of rabbit fur.

so the simple answer is yes, anything type of front wheel issue, broken spoke, flat tire, a stick on the spokes or a wild animal running into your wheel could as cause an 'endo'