Discover the one hidden muscle that could be causing your hip and back pain, and learn how to ease it with simple stretches.

The iliopsoas (pronounced ILL-ee-o-so-AS) is the combination of the psoas and iliacus muscles (the hip flexors). They are seriously underrated muscles. They don’t get nearly the press that hamstrings, ...

Suppurative psoas abscess is an unusual lesion that is unfamiliar to many orthopaedic specialists, which can make an accurate and timely diagnosis problematic. The symptoms associated with this ...

As he's set to miss yet another major tournament, Rafael Nadal is undergoing an arthroscopic surgery to examine a left psoas muscle injury that has kept him out of action for the last few months, ...

Doctors determined a man's severe back pain was caused by a rare disease that leads to pus buildup in the psoas muscle. When you purchase through links on our site, we may earn an affiliate commission ...

Investigators in a retrospective study of patients with diffuse large B-cell lymphoma (DLBCL) sought to understand the correlation between muscle loss and immunochemotherapy. In a retrospective study ...