I have tried to make a mnemonic for nasal cartilage septal fracture by making some association with the name
Jarjaway fracture = make me think pike George is away. That he means he walked on some path and paths are generally horizontal. So fracture is horizontal. And for horizontal fractures we need blow from front
Chevalier fracture = makes me think of shovel and you know when it is used it is struck on the ground almost inclined or vertical. So vertical fracture and for that fracture we need blow from below
I hope these associations work for you
InShaAllah
Thank you❤