Must exclude injury to ulnar nerve/artery<unk>  forms part of Guyon canal)
May involve the body, hook, or articular surface
Hook (common) - associated with interrupted swing of club, bat, or racquet (handle impacts hypothenar eminence)
Body (rare) - associated with fracture-dislocations of 4th/5th metacarpals
Hook (common) - associated with interrupted swing of club, bat, or racquet (handle impacts hypothenar eminence)
Body (rare) - associated with fracture-dislocations of 4th/5th metacarpals
Hamate fracture
Scaphoid fracture
Humerus fracture
Lunate fracture
Calcaneus fracture
Triquetrum fracture
Jefferson fracture
Pisiform fracture