Mri screening of the whole spine needs to be done apart from clinical examination .

Hello dear Thanks for reaching out. 3 weeks old fall is not related to the pain which developed 3 weeks back. The pain needs to be described in more detail : 1. Did he lift any heavy weight or had any jerky movement before onset of pain ? 2. Does the pain radiate down the leg and heel? 3. Does he feel any tingling over calf or foot? 4. Does he have difficulty squatting or sitting cross legged? 5. Does the pain awaken him from sleep at night? 6. Is the pain related to walking? 7. Does the pain get better by sitting and lying down? 8. Does he have any medical issues and any treatment he is on? 9. Also his age you should mention. So, for the time being it is difficult to ascertain the nature of problem. Only thing that is evident here is that the doctors have had some problem finding out the root cause. A few more answers from your side will help me reach a conclusion Regards Dr Vipin Gupta