Which Pelvis Model to Buy?

The content in the post was originally made in response to a question on a message board regarding what type of pelvis model do childbirth educators suggest for use in birth classes. I’m posting similar content here for any fellow childbirth educators who may come to this blog looking for pelvis feedback 🙂 Some people had expressed disappointment with a very tiny pelvis model that is out there for sale (and looks deceptively larger in photos) and others were concerned about whether the pelvis was flexible or not and also whether it had “bolts” at the joints for flexibility. Here is my response:

  • I have a non-mobile pelvis I bought from ebay (around $50) and like it quite a lot. It doesn’t have the flexibility elements, but I point to each joint and describe how it can flex, and that seems to be enough for most people. (The seller was “vanscience” when my husband got it for me for Christmas, not sure what is on there now.)

  • Then, I have the very tiny one as well (purchased from ebay, not from the Doula Shop). It is only about two inches probably. This is the one I actually prefer to use to show some of the cardinal movements and posterior/anterior positioning of the baby. I have a tiny fetus that I picked up from Birthright. It is a “12 weeks fetus,” but in an odd twist of providence, it fits PERFECTLY through that tiny, cheap pelvis that I regretting having for a long time. Now, I love it and find it really useful. My mom knitted me a tiny uterus with dilating cervix that exactly fits the tiny baby as well! The tiny baby even gets “stuck” on the back of the pelvis when it posterior and then when it rotates to anterior, it slides right through with a little “push.” It is like they were made to go together. The baby is hard plastic, so I can’t flex it to show all the movements, but they get the idea. I just share that babies go through a series of cardinal movements, but I don’t go through a big demo of exactly each one, I just show the baby rotating and slipping through.

  • I find the tiny set really easy to manipulate and convenient to demo with. The large one works well for tipping back and forth to show how different positions might compress or open and to point out the parts that are flexible in real life. But, I actually find that people seemed more interested in the positioning of the baby when I started to use the tiny set to show that part. I generally teach private, one-on-one classes, so that might be why it works so well for me. It would not work well in an up-in-front-of-a-class setting.

  • So, I use the big pelvis and big uterus and big baby each as separate teaching tools and then the little pelvis and baby as a “unit.”

  • Just wanted to share that that tiny pelvis isn’t all horrible! (though, man, was I disappointed when I got it and saw its microscopic nature. I was like, “this is a rat pelvis!”)

    2 thoughts on “Which Pelvis Model to Buy?

    1. This is my first blog post, but it was so on-topic with regard to selecting a birthing simulation model I was moved to respond.

      Our birthing simulator recently won 1st prize at a medical convention for obstetricians (out of 1000 entrants). I would invite anyone who has a sincere interest in a realistic birthing simulator to see the video and pictures at http://www.mimiconcorporation.com.

      Specs and features: We were asked to develop a highly realistic mid-range cost medical training and demonstration model for childbirth specifically for training obstetricians, midwives, and other healthcare professionals. The initial specifications were to make it more realistic than the prior art. We accomplished that with the use of our patented elastomeric gel, which is 600% more elastic than silicone, and also by using a realistic pelvis for palpation and checking the station of the fetus during delivery. Key points of reference were the ischial spines, the coccyx, and the subpubic arch. The design had to pass a panel of practicing and teaching obstetricians, and each one had a cherished feature we had to faithfully recreate. I would rather leave it to anyone who is interested to see the full feature list on the website instead of making this a long post for those who might not be interested.

      Please feel free to call or write me, personally, if you have questions. I am always happy to direct people to other resources and companies.
      With warm regards,
      Kyle Bronson, VP Operations
      Mimicon Corporation, Medical Division
      Toll-free: 866-8CYBORG

    2. Pingback: Affordable Fetal Model « Talk Birth

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