The lower leg lies between the knee and ankle and works with the upper leg and foot to help perform key functions. In the leg are a number of bones, muscles, tendons, nerves and blood vessels. These ...

What Is the Psoas Muscle? The psoas (pronounced so-ezz) muscles are two large muscles in your lower back. You have one on either side of your spine. They're the main muscular connection between your ...

The back consists of large, complex muscles that support your trunk and spine. There are many types of back muscles, and they are all essential, helping you walk, bend, twist, and hold your body ...