Grapeshot's Therapeutic Squeezer
Grapeshot's Therapeutic Squeezer was a simple little healing spell used to repair broken bones. Archchancellor Ridcully used it after he broke his knee during the football game in Unseen Academicals. Or, rather, after Andy Shank and other Faces of the Shove broke it for him. The Therapeutic Squeezer took the form of a glowing silver band around the broken bone. According to Ridcully, it would make him "as right as rain in no time", but while wearing it, he had to limp to get around.
Nothing is known about Grapeshot, the wizard who created this spell.