Many of you come to me with a variation of the same issue and I get it. In fact, I have the same chronic problem myself and understand your pain...The attached picture shows where the Psoas is in the body and how it attaches to the spine and top of the femur(thigh bone). As you can see, it is also right next to the Quadratus Lumborum and so when one throws a fit, the other usually gets involved and then they invite their friends, Piriformis, Gluteus Medius and the result is PAIN! It radiates up your back, down your butt into your leg and also along the side and/or front of your leg. It can be a little uncomfortable to excruciating. There are so many ways of contorting your body into stretching out these little buggers, but when in pain it is usually not easy to get into those positions. However, in my research for an easier solution, I found Constructive Rest. It is easy and I suggest you click on the link and watch the video and try it. Pain can be a motivator, but many times it is our body saying, "STOP!" "Take time to fix me!" It turns out the Psoas also holds a lot of our emotions and especially trauma. This means this little muscle tightens up and gets uncomfortable with the high levels of stress and trauma and let's you know when its had enough by getting your attention.