I did look up the LDR ROI-C. It is a cage, which the articles state, is less invasive that full plates and screws. This doesn't mean however that recover is fast. We all heal at different rates. You may be experiencing muscle spasms, that can occur with any spinal fusion. Maybe ask your doctor for an additional medication called Soma. This is for spasms, and when combined with adequate pain control, can help alot. You are still early into your recovery. If this seems very abnormal, get on the phone once again to your neurologist and express your concerns. Be as pro-active in your recovery as you can be. I am sorry you are still in such pain. I am fused C3-7 and those first 6 weeks were really hard. Tired and hurting much of the time. Don't be afraid to keep questioning your doctor. The bone growth stimulator is suppose to help. I really hope you achieve fusion and that this pain you have will get better. I will be thinking about you. I hope you heal, and the pain gets better. ginnie