Bandaging Charm

"He hurried over to Ron, bent down, tapped Ron's leg with his wand and muttered 'Ferula'. Bandages spun up Ron's leg, strapping it tightly to a splint."

- Lupin's use on Ron

Ferula is the incantation of a charm used to bandage and splint broken bones. It apparently eases pain as well. It was used by Remus Lupin in the spring of 1994 on Ron Weasley to support Ron's broken leg.

Etymology
The Latin term "ferula" means "a stick" or "a rod".

Appearances

 * Harry Potter and the Prisoner of Azkaban 
 * Pottermore

Notes and references
Ferula