It uses the remaining nerves of arm amputees that would otherwise be lost because of injuries.

VOA: special.2009.03.10

And for sake of argument, there are no amputees among the chickens and the pigs.

它走到农地里然后它看到了,20个头和56只脚。

麻省理工公开课 - 计算机科学及编程导论课程节选

The operation could help double arm amputees move their manufactured arms with greater ease and control.

VOA: special.2009.03.10

Arm amputees commonly use devices joined to their shoulders to operate man-made arms or wrists.

VOA: special.2009.03.10