This full-sized, anatomically-correct 6-piece female pelvis model includes the sacrum, 5th lumbar vertebrae, left and right hemipelvis, and proximal portions of the left and right femur. An optional stand base is also provided. 
See here for video: https://youtu.be/djYy23eG_EU
To assemble you will need 16 1/4” x 1/8” strong cylindrical neodymium magnets. To use the display base, you will also need an 8” section of ¼” square keystock.
Here are considerations for assembly:
•	Before inserting magnets, clean out the magnet anchors with a 1/4” drill bit to remove any imperfections, allowing the magnets to sit properly.
•	Ensure that you insert magnets with polarity oriented to allow proper connection of bones.
•	You may need to use glue to secure some of the magnets in place. CA glue works well.
Except for the sacrum, all bones are oriented in reasonable positions for printing.
The sacrum is a very difficult bone to print no matter how it is oriented, so you will need to position this according to your experience, preferences, and set-up. The bone pictured in the model was printed upside down, with ample support at the bottom.
Every attempt has been made to maintain anatomical correctness; however, the following small modifications were necessary to optimize the files for 3D printing:
•	Some areas of bone have been thickened to support the magnet anchors.
•	Thin parts of the medial sacral crest have been thickened or removed to improve printing strength and quality.
•	With the exception of a few centimeters at the top and bottom, the spinal canal and the complex tunnels of the cauda equina have been filled in to allow for better printing strength and quality. 
Development of this model was initiated and guided by Health Allies, a small regional Osteopathy clinic in Orange NSW, Australia with 4 practicing Osteopaths from various Universities across Australia. The model will be used for visual learning purposes, from patient education in the clinic, to assisting with continuing learning with other medical professionals.

Resources: https://3dprint.nih.gov/discover/3DPX-015843 


6-Piece Magnetic Female Pelvis Model

Do Not Print.stl

This display model of the right hemipelvis and femur uses an adjustable ball and socket joint to allow for movement and repositioning of the femoral head in the acetabulum. The model could be used to demonstrate hip replacement prosthesis, or just as an interesting conversation piece!
See here for assembly video: https://youtu.be/LXJVoEX21ZA 
The model is supported on the stand using a 6” long section of ¼” square keystock. The keystock inserts through the ischial tuberosity and is held in place with an anchor inside the pelvis. The anchor is designed as a separate shell and so could be removed digitally before printing if not needed.
Printing: 
Print the “Acetabular Cup” and “Collar” as provided so that the threads are oriented upwards. Changing the orientation may result in malformed threads. The “Femoral Head” and “Proximal Femur” should also be oriented as provided to ensure that the connecting surfaces print properly with the correct tolerance.
The “Right Hemipelvis” is oriented to minimize amount of support needed, but you might find an orientation that works better for your setup.
The “Right Hemipelvis” and “Proximal Femur” will need supports.
The “Stand” is a standard print.
Assembly:
If using the stand, ensure that the keystock inserts cleanly through the hole in the ischial tuberosity and is properly seated in the inner anchor. Clean up right surfaces as needed.
Glue the “Acetabular Cup” into the large hole in the “Right Hemipelvis”. Ensure that it is seated securely and evenly. CA glue works well.
Thread the “Collar” over the “Femoral Head” and insert the “Femoral Head” into the “Proximal Femur.” That tolerance is tight enough here that it will hold on its own, but you can add a bit of glue for a permanent connection.
Insert the “Femoral Head” into the “Acetabular Cup” and tighten the “Collar” into place. The collar can be loosened and retightened to move and hold the femur in different positions.
If using the stand, insert the keystock and place on the stand and you’re done!


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6-Piece Magnetic Female Pelvis Model

Pelvis Model with Adjustable Ball and Socket Acetabular Joint