It's hip to be a normal hip

As a ball-and-socket joint there needs to be some looseness to afford a good range-of-motion. The most common condition affecting the hip (or coxofemoral) joint is hip dysplasia for which the common hall-mark is excess looseness or laxity. There are several techniques for assessing the degree of laxity.

Other conditions to affect the hip joint include

avascular necrosis of the femoral head (the ball),

fractures of the femoral head or the adjacent femoral neck, or the socket;

osteoarthritis / degenerative joint disease (often secondary to hip dysplasia, or avascular necrosis, or fractures.

other types of arthritis, such as septic / infectious arthritis; or

other types of inflammatory arthritis.