With our working conditions and our lifestyle, there is bound to be an effect on us. Pains in any joint can be extremely painful and takes a long time to treat too. A Sacroiliac joint dysfunction or an S I Joint dysfunction is a common pain in the side of hip bones that is caused either by too much motion or too less motion. This condition usually causes the hip bone to swell up which therefore causes a lot of pain. It is a condition that is common in older people who have had extremely active lives.