Thanks for writing to us.
The shoulder and sternal pain has nothing to do with L4-5 level level. However this pain may be due to cervical disc prolapse with nerve pressure. I would suggest to consult a spine specialist ho get a thorough exam and if needed get mti cervical spine. Thanks.

Thanks for your query. Please be informed that the Nerves at L4 and L5 control the foot and big toe. The Sciatic Nerve (the largest nerve) starts in low back at L3 and run through the bony canal and at each level in the lower back a pain of nerve root exit from the spine. The nerve that exits at L4 and L5 is name L4.
The damage and compression of sciatic nerve cause leg pain, low back pain. Numbness, tingling and weakness and it will affect the ankle.
The tingling sensation between your shoulder blades are more likely to be due to Cervical and Upper Thoracic spine and for that you need to have X-Ray of Cervico -thoracic spines (AP and Lateral view) and you are also advised to get MRI done of this region.
Your pain and tingling sensation may be due to nerve compression but not due to L4/5 surgeries.
You can take the following
•     Naproxen Sodium 550 mg OD
•     Diclofenac Pot. 100 mg SR TDS
•     Omeprazole 20mg OD before meal
If you don’t get relief,plz let me know on pakheim@gmail.compakheim@yahoo.com
Hoping that you will get benefit from my advice.
My prayers are with you.
Thanks and best regards.
Dr. IjazNasir
Chest Specialist and Head of Chest Department
Gulab Devi Chest Hospital Lahore