Originally Posted by Steven Low
The thumb is C6 I believe.
It is possible to try to open up more space (cervical traction.. manual or machine) or eliminate swelling if it's there. Although since it only occurs when you DL, it's probably that you need to keep the head neutral most like most have been saying.
Well, it'd be hard to open up more space since she has had previous plate and screw fixation at that level
One other possibility to throw into your differential is evaluating the scalene muscles. They refer pain down the thumb side of the arm/hand, and attach to your area of previous surgery, so may be scarred over. I guess a good question would be whether you had anterior or posterior entry into the neck.