Had carpal tunnel surgery back in 2009 and my fingers and arm are still going numb and wake me up out of my sleep... what could this be?

See doctor: Your problem may be higher up in your cervical spine a bulging disk in your neck may be impinging on the nerves that innervate your wrist and hand. Consult your physician.

New exam. Maybe EMG: A new examination by a physician who specializes in nerve pain (dysesthesias) is warranted. The key would be to perform a physical exam and history to try to differentiate the cause. Electrodiagnostic studies (EMG) may be indicated to evaluate specific nerves. Get eval with neurologist, physiatrist, or hand surgeon to help.

Let me explain: 1-did they do the EMG test before the surgery and nerve conductive studies? 2- since you still have pain and numbness after the surgery, it is recommended to have another EMG to see if the pressure was released? 3-after that, if the test was positive, you may have internal scar in the nerve and sometime you will require release of the scar inside the nerve .Good luck.