Male or Female Pelvis? Choosing a Pelvic Skeleton Model with BIX-A1035

Short answer: BIX-A1035 is a life-size pelvic skeleton model in PVC. Its published feature list describes a high and narrow pelvis with a funnel-shaped pelvic cavity, an approximately heart-shaped upper pelvis, a subpubic arch of 70–75 degrees and a narrow, long pubic symphysis. Those are the classic descriptors of a male-type pelvis. If your teaching objective is obstetric — inlet shape, pelvic axis, subpubic angle measured for delivery — you need the female model; if it is general osteology, orthopaedics or forensic comparison, BIX-A1035 is the correct starting point and the female pelvis becomes the contrast.

Key takeaways

• Published features point to a male-type form: heart-shaped inlet, funnel-shaped cavity, 70–75° subpubic arch.
• Life size, PVC: the measurements students read on the model transfer to the patient.
• Built for handling, not for a display case — treatment also states the pelvis is "natural large", i.e. modelled at real proportions.
• Pair it with a female pelvis to teach sex differences in one station rather than in two separate lectures.
• Price and packing are not published — request both before you compare landed cost.

Comparing the two pelvises: what the published features tell you

Note on the feature list: the product page also carries a line reading "Tibia: narrower, more curved" among its pelvis features. That appears to be a translation artefact from the manufacturer's original text; confirm with the sales team before quoting it in teaching material. Everything else in this table is reproduced as published.

Why the sex difference is the teaching point

The pelvis is the part of the skeleton where variation between individuals matters most, because the dimensions that differ are the dimensions that decide whether a birth proceeds normally. That is why the measurement of the pelvis and its inlet and outlet keeps returning to the literature: a current review reassesses whether pelvimetry remains a relevant clinical tool or has become an outdated concept [1]. Either way, the argument is conducted in millimetres and degrees — which is exactly what a life-size model lets a student measure.

A physically measurable model is what makes this teachable: the student needs to put a rule across a subpubic arch and get 70–75 degrees, then compare. Printed and physical models have been shown to perform comparably to cadaveric material in randomised teaching studies for anatomy, which is what makes a well-made life-size PVC pelvis a legitimate teaching object rather than a stand-in [2].

How to run the comparison station

1. Start with shape. Show BIX-A1035 alone and ask students to describe the inlet from above before introducing the female pelvis.
2. Measure. Have students measure the subpubic arch angle and record it; the published figure is 70–75 degrees.
3. Add the contrast. Place the female pelvis alongside it and repeat both observations.
4. Go functional. Ask what each difference means for the passage of a fetal head.
5. Return to identification. Present an unlabelled pelvis and ask for the sex plus the evidence used.

Before you order

• Price and packing. Neither is published; request the unit price, carton dimensions and gross weight together.
• Stand. Ask whether the pelvis is supplied with a stand or spring mounting, since a life-size pelvis is usually displayed upright.
• Pairing. If you teach both sexes, request the female pelvis model in the same enquiry so the two arrive matched.

Send these questions to cprwell@adaanatomy.com and we will answer each point and attach the current supply data.

FAQ

Q1. What is BIX-A1035?
It is a life-size pelvic skeleton model made of PVC, described on the product page as a natural large pelvis.

Q2. Is it a male or female pelvis?
The published features — high and narrow shape, funnel-shaped cavity, heart-shaped upper pelvis and a 70–75 degree subpubic arch — describe a male-type pelvis. Confirm the intended presentation with the supplier if sex-specific labelling matters for your course.

Q3. What material is it made of?
PVC.

Q4. Can students measure it?
Yes. The subpubic arch angle is published as 70–75 degrees, and the model is life size, so measurements can be taken directly with a goniometer or rule.

Q5. What should I buy if I teach obstetrics?
A female pelvis model. BIX-A1035 works best as the comparison specimen in an obstetrics session.

Q6. How do I get the price and matching models?
Email cprwell@adaanatomy.com with the model (BIX-A1035) and the quantity; ask for the female pelvis and pelvic-skeleton models in the same catalogue in the same message.

Request a quotation

Write to cprwell@adaanatomy.com for a quotation on BIX-A1035, the female pelvis model and any spine or limb models you need for the same course. Include the number of units and your destination port so packing data and freight can be confirmed.

References

1. Modern Utility of Pelvimetry: a Relevant Tool or an Outdated Concept?. Cureus. 2025.
2. Use of 3D printed models in medical education: a randomized control trial comparing 3D prints versus cadaveric materials for learning external cardiac anatomy. Anatomical Sciences Education. 2016.