Severe bone breaks are hard to fix because traditional metal implants are too stiff and bone grafts require extra surgery. The problem is that these old methods don't mimic the body's natural "soft" healing phase, leading to slower recovery. The solution is a new 3D-printed hydrogel made of 97% water that can be laser-shaped into tiny, bone-like structures. The benefit is a faster, safer way to heal, as the gel allows living cells to move in and build new bone before it safely dissolves.
