I am sorry to hear about your injury. I am a bit older (55) and have been lifting heavy for about 8 years. I am having similar symptoms and am curious what has happened since your posted in February.
It be fair, I have had tingling and numbness on and off for about four years, especially when back squatting. I did not have any muscle weakness. At that time my orthopedic surgeon determined this was due to normal aging and vertebral bone spurring. Since there was no significant muscle weakness, and very little pain, not much was recommended, except physical therapy. The exercises cleared up the acute issues at the time, and the sporadic tingling was not much of a concern.
Last August I had a decent workout and the next day I was in agony. (Scapular pain). The acute symptoms were pretty bad for about a month, and p-t resolved most of the pain issues, but I am fighting through the muscle weakness (tricep and bicep, C7, C5-C6). It is pretty noticeable and annoying.
I am improving but very slowly. I am seeing a neurologist on Thursday. (Initially the hypothesis was a rotater cuff tear, but that [thankfully] was ruled out by an MRI study).
A rundown of your experiences would be much appreciated.
Thanks a million.