Hip and buttock pain have a number of causes; a common one is ‘butt gripping’. Some people clench there ‘butts’ without even realising it and it can compress the sciatic nerve and even cause pain to radiate down the back of the leg. The other effect of ‘butt gripping’ can be to restrict the small amount of movement in the sacrum (tail bone) which in turn alters the mechanics of the lower back and hip. This can result in back and/or hip pain.