Torsion

Driveshafts are almost only stressed by torsion effects.

A Renault 6 doesn't use coil springs or leaf springs. It uses torsion bars in the suspension.

Chuck Lampe, 44, an independent publisher in Florida, has been taking shots of Botox deep into the muscles of his legs for 10 years to lessen the discomfort of a genetic disorder called torsion dystonia, an extreme and long-lasting version of the condition commonly called “writer’s cramp.”