The latest proposed bone regenerative therapy is a paint-like substance that coats implants or other devices to promote bone regrowth. It’s designed for use in treating combat injuries and lower back pain, among other issues. After about $9 million in grants from the Departments of Defense and Veterans Affairs, the substance, called AMP2, made by the company Theradaptive, is moving onto the next trial phase, a step ahead of testing on humans. Creator Luis Alvarez, a retired Army lieutenant colonel who served a year in Iraq, said coating an implant is much better than the current, more dangerous therapy for bone regrowth. Read more on Military.com.