Repeating genicular RF?

Have a lady 100% relief with diagnostics. 100% relief with cooled RF x 1 month. Now pain is back, same distribution as pre-procedure. I dont think there is ITB/Pes Anserine or other such issue. I got worried about infection, but her implanting ortho saw her ASAP in office and didnt think so and the ESR/Sed/CBC I sent was neg. I guess my question is how can I explain this? Incomplete neurolysis from suboptimal needle positioning? Should I repeat the RF? Or is it more "central... Repeating genicular RF?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums