A Protruding Lower Belly and a Stiff Lower Back: What the Psoas Muscle May Have to Do With It
A Protruding Lower Belly and Stiff Lower Back: Could the Psoas Be Involved? The psoas muscle is a deep muscle that runs from the lower spine through the pelvis to the upper thigh. It helps flex the hip and contributes to stability of the lower back and pelvis. C Cleveland Clinic +1 A tight or …





