118 a b such as to permit grasping by a user such as during the pivoting of the pelvic region structure 115 the knobs or other handles 122 a b or the receptacles 120 a b can include a locking feature such as to permit the pelvic region structure 115 to be locked into a particular rotational position such as can be selected from one or several pre specified or arbitrarily user selected positions along the rotational range of pivoting motion rotating the pelvic region structure 115 can be helpful for teaching or other demonstrative purposes such as to allow viewing or video capture of internal anatomy of the pelvic region structure 115 from an open top surface or to allow the pelvic region structure 115 to be placed in a horizontal orientation as may be representative of positioning during an actual live human pelvic examination medical or surgical procedure or technique in an example the model 100 can include or be coupled to a video camera such as can be mounted to the open top surface of the pelvic region structure 115 to allow video capture of a surgical or other medical procedure or examination fig2 a is a side view of an example of the anatomical model 100 with the stand 111 and the pelvic region structure 115 fig2 a illustrates an example of an ability to rotate the pelvic region structure 115 with respect to the stand 111 such as forward or backward in an example such rotation can provide a full 360 degree range of rotational pivoting motion if desired a more limited subrange can be provided such as by providing one or more.