Ouch Pedro, sorry to hear about your neck.
My father is a kinesiologist so I read some things about what seems to have happened to your neck. Thats gotta hurt man! I have some problems with my legs too. 1. They can bend backwards."seriously" 2. I have a disease called osteochondroma. Basically I have a bone growning out of th side of my femur. You can't see it stickiing outa the side of my leg or anything so i'm not a total freak. lol