Congratulations to Dr. Alan Blank, who's among Crain's Chicago "40 Under 40" for 2019.

Dr. Blank is leading the nascent field of 3D modeling in orthopedic oncology. Turning MRIs and CT scans into tactile models lets surgeons truly see and feel tumors, muscles and bone before heading into the operating room, he says. The models provide ultra-accurate cutting guides for removing tumor and bone. And the fit of 3D-printed titanium bone replacement implants are "like night and day" compared to bone replacement cut from cadavers, Blank says.

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