Thanks for asking. The C4-7 has been amazing (now 4+ months post). Range of motion and cervical pain are noticeably better with continued improvement noted. It is early for a full understanding of the L2-5 work. I already notice elimination of random numbness in my legs which drove me to surgical intervention in the first place. I'm just 5+ weeks post so I'll need a few more months and some PT to be able to fully answer your inquiry. But I'm optimistic for sure.