There has been an increase in the number of people over 65 who have needed spinal fusion surgery, and many have focused on trying to create a biomimetic scaffold that induces vascularization. Researchers present a solution to address the challenge: They designed a microchannel scaffold made of a collagen and hydroxyapitite combination, with each strut consisting of micrometer-scaled microchannels. The microchannels have induced growth of blood vessels in a mouse model.