Drawings of Ball Joints - The Beauty of Man-Made

Ball joints are often seen in older, antique dolls. While ball-jointed dolls themselves are central to the BJD subculture, the aesthetic can often be seen in prosthetics depicted in illustrations. A character who looks quite normal but actually has such a prosthetic is certainly charming, isn’t it?

Do you like the ball joint aesthetic? How might you depict it in an illustration?