Yes, low back problems can cause
pain in the front of the thigh. I know, becuz I have that. My
lumbar spine is goofed up, and it hurts in my low back, buttocks, and the front of my thighs, and in my lower extremities below the knee. The nerves to the legs come out of the lumbar spine, and they go every whichway, and while sciatica goes down the back of the leg (I think that's right), you can have pain in the front, too, from a bad lower back.