It's kind of hard to say which model is most reliable. Taken care of properly, they'll all hold true. But there are some models more prone to certain things (subframe, etc) than others, but again, the main thing is how well it was looked after by the person before you.
obÂ·tuÂ·raÂ·tor forÂ·aÂ·men. A large, oval or irregularly triangular aperture in the hip bone, the margins of which are formed by the pubis and the ischium; it is closed by the obturator membrane, except for a small opening for the passage of the obturator vessels and nerve. Synonym(s): foramen obturatum [TA] .
Obturator internus Medically reviewed by Healthline Medical Team on April 7, 2015 Its primary function is to help move the thigh away from the center of the body by rotating it in a sideways direction. When the thigh is flexed, it assists other muscles in moving the thigh outward, away from the midline of the body. It also helps to stabilize the hip joint. Its primary function is to help move the thigh away from the center of the body by rotating it in a sideways direction.