Your aching back: New treatments for an old problem

A quarter of a million American adults say they’ve suffered from lower back pain in the past three months. Al Roker reports from New York’s NYU Langone Medical Center, where one woman undergoes a new procedure called radiofrequency ablation. Then NBC medical contributor Dr. Natalie Azar joins TODAY live to explain what you need to know about the latest back pain treatments.March 7, 2017