Question - how is your partner procedurally? Are you confident that he has truly burned the L5 DR in these patients? Not trying to be a jerk. Obviously, we've all seen patients who have had injections/procedures that were not done properly.I frequently RF next to pedicle screws (usually under an L4-5 fusion). Often requires a little more oblique, and it’s as much by feel as by fluoro, but I’d say at least 2/3 of the time I get a motor response. My partner often just does the L5 DR and I’ve repeated a few of his that failed, but with both nerves and had success with some (maybe half).