Hi, welcome to HCM.
Good query. After physiotherapy
if there is no decrease in symptoms, you can opt for epidural injection of steroids
It should be taken at 2 weeks duration . Total of 2 injections only. There after symptoms persists , operation is the choice. However it will better to consult your orthopaedician for detailed opinion and possibility of cure by each modality.
Hope I have answered your query.