Donna,
This was the 1st plate I had put in. It is a double and covers 3 vertibrae. I also thought it was neat that you could only see 2 of the screws because of perfect alignment. It's scary to think that a doctor has to have such steady hands to drill holes and put screws in your bone so close to the spinal cord. I guess it's like anyone else who has a job that does the same thing over and over, you can practically do it with your eyes closed. I asked about the chance of the screws backing out and he told me that the plate had little sliding covers that slide over the screws to prevent that. Even though it is uncomfortible I also respect the collar.
Take care,
Frank