All movements are possible in each region of the vertebral column, with the range of motion determined by disc thickness and articular process geometry. The movements of flexion, extension and lateral flexion involve compression of the intervertebral discs at one edge and stretching at the other.
It is important to note that rawhide bones and chews made in USA are the absolute best for your dog. Choosing American Rawhide, Merrick, Dingo, Bone Buddies or Beafeaters brands you give your pet a rawhide chew of premium beefhide from corn-fed American cattle produced under the strictest quality standards. American production processes and sanitation practices are much better and more highly regulated than most other countries producing rawhide bones.
If left there, the rawhide can wear a hole in this wall, exposing the heart and the dog will die. Also if left too long, it can form scar tissue in the esophagus which will cause problems down the road. My dog showed signs of distress so it's possible that your dog was able to swallow it and it will be pooped out.