Backache radiating to leg (the way you describe) can be due to Sciatica..
You can meanwhile start on,
T. Nucoxia P BD (After meals)
C. Meganeuron OD+ in evening
C. Ocid 20 morning empty stomach
T. Gemcal XT morning post breakfast
Next Steps
In case of any weakness, tingling, numbness, fever or increased pain please do consult in person for clinical examination & further evaluation!
Health Tips
Avoid bending forwards/ lifting heavy weights