So often anterior thigh pain can be more from a neurological cause than a mechanical cause. This video of John Gibbons perfectly explains how to test for a femoral nerve involvement. It not only innervates the front of the thigh, but the front of the shin, inside border of the foot to the inside of the big toe. Localized numbness or pain at the medial side of the big toe can be part of a femoral nerve injury at the low back.