This Sponge Could Help Fill Gaps Where Bone Can't Regrow Itself

Your bones are masterful self-healers, but certain injuries and defects can leave a gap too wide for new bone cells to fill in. Texas A&M's Dr. Melissa Grunlan and team have come up with a solution, a biodegradable polymer sponge that supports new bone cell growth, then disappears as it's replaced by solid bone.