If you mean the hip joint that moves, it is the muscles / tendons and ligaments in addition to the cartilage of the joint. Take a look at the joint between the thigh and the pelvis on a fried chicken -- many animals are like that.
Piriformis
Tendons are the structures that prevents valves from turning inside-out.
Hip abduction is bringing the straightened leg outward.
With a crook or bend; with the hand on the hip and elbow turned outward.
You are exercising a person's hip. You turn his leg outward so that his toes are pointing out and away from his body. This movement is called:
Ectropion is the medical term meaning outward turning of the edge of the eyelid
In the anatomical reference position, what is the position of the hip joints
By turning with the wind, it prevents wind from blowing down the chimney.
you use your hips in snowboarding to turn, stop and carve. Your hips are really important for snowbaording.
The Ilium is the largest and most superior portion of the coxa, flares outward, forming the prominence of the hip. The margin of this prominence is the iliac crest.
The VATS security system prevents the starter from turning and thus the engine from turning over. Also, the entire ignition system is not activated unless the proper VATS key is used.
Depending on what part of the body you are talking about, or around what axis the body part is turning, it could be a few different terms. Probably the two most common are externally rotated or adducted.