Can selective cervical root block in cervical hnp be effective even though multiple interlaminar epidural blocks failed to give relief?would u do it?

Yes: Selective cervical nerve root blocks can help provide pain relief when epidurals have not. Given the choices of living with the pain, trying surgery or getting a block done I would probably opt for the block. Make sure you are also continuing with standard treatments. Heat, ice, stretching and range of motion exercises are all equally important.