Escapology is the practice of escaping from restraints or other traps. Escapologists escape from handcuffs, straitjackets, cages, coffins, steel boxes, barrels, bags, burning buildings, fish-tanks, and other perils, often in combination.
Harry Houdini (1874–1926), a famous escapologist and magician
Harry Houdini before one of his escapology performances in Boston 1908
Physical restraint refers to means of purposely limiting or obstructing the freedom of a person's bodily movement.
Handcuffs and chains from wrought iron as formerly used on prisoners; Wales, 19th century (museum exhibit)
Modern chain handcuffs made of hardened steel; Hiatt 2010
Modern steel legcuffs
Iron wrist shackles with chains and padlock; Germany c. 17th century