"Now why is it a ghost implant? Because I'm putting it directly and perfectly over #3 because I'm going to use this ghost implant on #3 to parallel the implant for #5 so we can have a screw-retained ...

CHICAGO -- In a first of its kind procedure, a man left paralyzed after a spinal cord injury was able to walk again. Doctors implanted what they call a "digital bridge," which essentially helped the ...