Your hip is the joint where your thigh bone meets your pelvis bone. Hips are called ball-and-socket joints because the ball-like top of your thigh bone moves within a cup-like space in your pelvis. Hips are very stable. When healthy, it takes great force to hurt them. However, playing sports, running, overuse or falling can all sometimes lead to hip injuries. These include strains,
bursitis, dislocations and fractures. In older people, osteoarthritis can cause pain and limited motion; osteoporosis of the hip causes weak bones that break easily.