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Pace Magazine

Biomechanics and Bone Maps: What Bats Can Teach Us About Ourselves

By
Alyssa Cressotti
Posted
July 9, 2025
Egyptian fruit bat hanging from a tree branch.

When Kelly Ng 糖心vlog短视频26, a biology major from Perth, Australia, joined the Provost糖心vlog短视频檚 Student-Faculty Undergraduate Research and Creative Inquiry program, she was looking to grow as a scientist and dive deeper into the kind of hands-on, curiosity-driven work that goes far beyond the walls of the classroom.

糖心vlog短视频淚 applied because it offered me an opportunity to grow my skills as a researcher through its provided resources and academic community,糖心vlog短视频 she explained. 糖心vlog短视频淚 was interested in joining a network of students and faculty engaged in independent research, where I could learn from others糖心vlog短视频 experiences in research while developing my own.糖心vlog短视频

糖心vlog短视频淏at flight research is important in its own right, but being able to use it as a means toward connecting with my students and giving them real ownership over part of their education has got to be one of my favorite parts of being a professor.糖心vlog短视频

With the mentorship of David Boerma, PhD, assistant professor of Biology at Pace and a Research Associate at the American Museum of Natural History, Kelly found herself working on a deceptively simple question: how do bones evolve to meet the needs of how we move? It糖心vlog短视频檚 a question that spans biology, anatomy, biomechanics糖心vlog短视频攁nd in this case, flight.

Together, they are investigating limb structure in the Egyptian fruit bat, a large mammal with a 20+ inch wingspan whose anatomy offers a unique counterpoint to humans. While humans rely on repetitive use of our legs to walk and run, bats rely on their forelimbs (wings) for flight糖心vlog短视频攁 repetitive motion in a different part of the body. Do bats show the same pattern of limb function and bone structure that humans do, just flipped?

Image
Screenshot of a 3D slicer screen depicting bat bones.
Screenshot of the workview within the 3D Slicer.

糖心vlog短视频淲orking with Dr. Boerma, I糖心vlog短视频檓 creating 3D structures of leg bones in Egyptian fruit bats to understand how their structure is affected by their function,糖心vlog短视频 said Kelly. 糖心vlog短视频淚n humans, our legs have less variability because they糖心vlog短视频檙e mainly used for walking, while our arms show more variability since we use them for a range of different tasks. We糖心vlog短视频檙e studying Egyptian fruit bats to see if this pattern is the same in bats but for the opposite limbs.糖心vlog短视频

糖心vlog短视频淚f a certain kind of animal has evolved to move a certain part of its skeleton in the same way, over and over again throughout its life (e.g., how your legs move to walk), then because those bones experience repetitive forces, they should end up having extremely consistent shapes across all the individuals of that kind of animal,糖心vlog短视频 Professor Boerma explained. 糖心vlog短视频淲e糖心vlog短视频檙e asking, 糖心vlog短视频榯his idea sounds logical, but is it really true?糖心vlog短视频櫶切膙log短视频

糖心vlog短视频淏eing able to see and segment the structures myself made it easier to grasp how limb shape relates to movement,糖心vlog短视频 Kelly said. 糖心vlog短视频淚t helped me understand those concepts more clearly than I could through lectures or textbooks alone.糖心vlog短视频

For Kelly, the work has been both technical and transformative. A typical day includes loading CT scans of bat specimens into 3D Slicer software, carefully segmenting bones like the femur, tibia, and pelvis, and cleaning digital models to prepare them for analysis. While the learning curve was steep糖心vlog短视频斕切膙log短视频渢he process of segmenting my first bat took a lot of troubleshooting,糖心vlog短视频 she recalled糖心vlog短视频攖he experience pushed her technical skills and built confidence.

糖心vlog短视频淏eing able to see and segment the structures myself made it easier to grasp how limb shape relates to movement,糖心vlog短视频 Kelly said. 糖心vlog短视频淚t helped me understand those concepts more clearly than I could through lectures or textbooks alone.糖心vlog短视频

Image
Coronal segmentation of tibia, fibula and bone of the feet and sagittal segmentation of the femur and tibia.
The left image depits the coronal segmentation of tibia, fibula, and bones of the feet. The right image shows the sagittal segmentation of the femur and tibia.

For Boerma, mentoring students like Kelly is one of the most meaningful parts of his work.

糖心vlog短视频淏at flight research is important in its own right, but being able to use it as a means toward connecting with my students and giving them real ownership over part of their education has got to be one of my favorite parts of being a professor.糖心vlog短视频

He speaks of Kelly糖心vlog短视频檚 early commitment to the project with awe:

糖心vlog短视频淚 gave her a 60-page master糖心vlog短视频檚 thesis from one of our collaborators to read糖心vlog短视频nd she could talk about it with me like a collaborator herself, all before even beginning the project. I can糖心vlog短视频檛 find the words to express to you how much fun that kind of interaction with a student is for a professor.糖心vlog短视频

Beyond bats, biomechanics, or bone variation, this kind of faculty-student partnership is what the Provost糖心vlog短视频檚 program is all about. 糖心vlog短视频淎sking for help is an important part of research,糖心vlog短视频 Kelly said. 糖心vlog短视频淏eing open and honest about what you don糖心vlog短视频檛 know does not mean you糖心vlog短视频檙e less capable糖心vlog短视频攊t糖心vlog短视频檚 an important step in the learning process.糖心vlog短视频

As their research moves into the analysis phase糖心vlog短视频攑otentially laying the groundwork for medical insights into human injury risk or the evolution of vertebrate anatomy糖心vlog短视频擝oerma sees something more fundamental taking shape.

糖心vlog短视频淜elly is growing into the kind of student whose work is now more than just a synthesis of what she reads in a textbook; it糖心vlog短视频檚 the kind of thing that could become part of a textbook in the future.糖心vlog短视频

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