Yay for science, right? Wrong!
Then you read on:
The spinal cord was severed on one side above the implant, and a second implant put into the part of the brain that controls the affected leg. This implant detected when the monkey wanted to move and sent signals to the device in the spine. Within six days, the first monkey was crawling using both legs. A second animal did so in two weeks (Nature, DOI: 10.1038/nature20118).
The “scientists” cut off the monkeys’ spinal cord rendering them paralysed. Then the ‘scientists’ opened their skull and implanted something.
From New Scientists, 14 Nov 2016