A similar implement, the
foot press, consisted of a pair of horizontal iron plates slowly tightened around the bare foot by means of a crank mechanism, squeezing the foot with sufficient force to pulverize the bones. Although it was quite standard to line the lower plate with ribs to prevent the foot from popping out of the grip of the instrument as it became sweatier, a crueler variant of this device—typically encountered in
Nuremberg, Germany—lined the upper plate with hundreds of sharp spikes. The
instep borer was a putative medieval instrument of
torture that externally resembled an iron boot into which the prisoner's bare foot was locked. Turning an external crank slowly advanced a serrated iron blade into the boot, boring a hole through the center of the instep. The only source that documents the device (Hirsch, A. E., ed.,
The Book of Torture and Executions, Toronto: Golden Books, 1944) indicates that it comes from Spain. This itself is questionable, since torture technology was much less sophisticated in Spain than in, e.g., Germany. Moreover, the very design and engineering of such an intricate device is not consonant with the Spaniards' preference for simple—but highly effective—tortures like
foot roasting. A version of the boot from
Venice, sometimes called the
foot screw or
toe breaker, connected the crank mechanism to a drill that slowly mutilated the foot by boring a hole through the center of the instep as the press was tightened. Further, a spike might be positioned over the big toe, which punctured the nail and savagely tortured the sensitive nail bed as the press was tightened. The "toe breaker" from Nuremberg was a wider instrument that accommodated both feet, side by side, simultaneously applying inexorable crushing pressure to all ten toes. Were the prisoner particularly stubborn or strong-willed, the press could be tightened until the plates met, so grinding the foot bones to powder. In
The Big Book of Pain, Donnelly and Diehl present an ingenious and diabolical iron torture boot. The configurable device completely encloses the naked foot. The roomy toe box is filled with iron spikes, teeth, and burs. A vertical plate behind the prisoner's heel fits into a grooved track and can be forced forward by turning a wheel. The steadily increasing pressure first forces the toes against the spikes, mangling their flesh and crushing their bones. Under continued inexorable pressure, the bones of the instep eventually give way until the arch of the foot is shattered. The heel bone is sufficiently powerful to withstand the torture, although the heel is not generously provided with afferent pain nociceptors. Another variation occasionally seen (Scott, 1991) is a compartment beneath the sole of the prisoner's foot that can be filled with red-hot coals. ==References==