I thought I hurt my back golfing but the next day along with severe lower back pain I also had a temperature of 101 and the next afternoon it increased to 103. My leg pain was in the front of my thighs instead of the usual sciatic type pain. I have not other symptoms besides the high fever and chills and the back pain which make me feel really sick. What could be causing this?
In general, pain in the front of the thighs could also be from an issue in the lumbar spine (lower back), but from an issue higher up in the lumbar spine, such as the L3 or L4 nerve roots, (rather than the L5 or S1 nerves which form the sciatic nerve). But with a fever and back pain, one of the things we worry about is an infection potentially causing the back pain, and while rare, your doctor would want to make sure an issue like an epidural abscess is not a concern.  So, I would recommend you see your primary care doctor, and have them examine you and get blood work performed.