What is the ASIS? This refers to the Anterior Superior Iliac Spine. This provides attachment for three types of muscles. The first one is A which is the sartorius. The second one is B which is the rectus femoris. The third one is the tensor fascia Latta. If you would put your hand above your waist, this is what you will locate.
The PSIS is located at the back portion. If you would notice, there are some people who have more prominent “dimples” at the back as compared to others. The ASIS and the PSIS are usually checked in order to assess the pelvic tilt of the person.