Hogtying is an extreme form of restraint where a suspect's hands are cuffed behind his back and the suspect's feet are hobbled to the handcuffs.
Hogtying can lead to positional asphyxia and suffocation. The potentially lethal situation can be exacerbated by tasering.
In a comprehensive study questioning taser use Amnesty International concluded that tasers "should not be used in combination with other forms of restraint which can impair breathing, and that dangerous restraint holds such as chokeholds or hogtying should be avoided in all circumstances."
The study evaluated cases of individuals who died after being tasered and found that 16 individuals died after a combination of tasering and hogtying.