Your hip joints are ball-and-socket joints positioned where your thigh bone meets your pelvis. The hip joint is involved in many types of movement. It is also one of the largest joints in the body, ...

Hip dysplasia occurs when the two bones that come together in the hip joint — the pelvis and femur bones — are out of alignment. The condition can cause misalignment, movement, and flexibility issues ...

and into the painful muscle. The hip joint can withstand repeated motion and a fair amount of wear and tear. As the largest ball-and-socket joint in the body, its structure allows for fluid movement.

Laura Walker only started running five years ago, at age 45. She was born without hip sockets, and spent the first two years of her life in a body cast. Her condition now manifests as low-level ...