Your hip/thigh is probably externally rotated and flexed. Did he tell you if it was both hips equally or one? If it's one you could have more external rotation in that one and not enough (more internal) in the other. Too much external rotation goes with sciatica because the muscles that externally rotate are around the sciatic nerve and therefore affect it. The way the pairings work is flexion goes with external rotation (think bottom position of a squat, knee out and hip flexed) and extension goes with internal rotation (think pushing off after taking a step, knee more in and hip extends). Again, check out mobilitywod.com, it deals exactly with this kind of stuff You mean tight hip flexors?
