I have back pain that radiates to hip and butt and front of thigh. What can be the problem?

Back or Hip. There are many causes of low back pain and hip pain. Often they are related. A bad hip can cause buttock, groin, and/or thigh pain. Sometimes a pinched nerve in the back can cause back, buttock, and thigh pain depending on which nerve is involved. If your pain does not improve or gets worse you should contact your physician to help identify the cause.