Physical deformities on either hip joint can cause pain around the groin area and upper thigh. Hip deformities can be congenital, genetic, or related to poor posture or injury. There are two types of deformities commonly associated with hip pain:
Hip dysplasia or acetabular dysplasia happens when the hip joint socket (acetabulum) is too shallow for the head of the hip bone (femoral head) to articulate properly. This causes the femoral head to partially or completely slip from the hip joint. If left unchecked, the deformity can cause painful complications such as a hip labral tear or osteoarthritis.
Also known as femoroacetabular impingement (FAI), hip impingement is a condition where the femoral head and acetabulum don’t fit together properly due to the formation of bone spurs on either of the two. FAI causes the two bones to rub against each other, resulting in inflammation, stiffness, and pain around the hip joint.