Deboning

Brackium Emendo is a healing spell, repairing broken arm bones.

It was attempted (incorrectly performed like all his other spells he tried except for Memory Charms) by Gilderoy Lockhart on Harry Potter's arm in 1992 after being hit by a tampered Bludger programed to strike only Harry, thus this spell removed all his bones in his arm.

Etymology

 * Brackium coming from the Latin "Bracchium" meaning: forearm.
 * Emendo coming from the Latin: it could mean to free of faults/to correct, but also to erase/to remove.

Behind the scenes

 * It is unknown if this spell truly exists to heal broken bones, or if it is another one of Lockhart's on-the-spot nonsensical inventions in an attempt to make himself more famous.
 * This spell may be related to the Vanishing Spell.
 * The danish translation of the spell is Brækjern Emendo. A brækjern is a crowbar.

Appearances

 * Harry Potter and the Chamber of Secrets (film)
 * Lego Harry Potter: Years 1-4

Notes and references
Bracium Emendo