Occurs via fall onto hypothenar eminence
Forced wrist flexion or strain from lifting heavy objects can avulse the<unk> 
Must exclude injury to ulnar nerve/artery<unk>  forms bony wall of Guyon's canal)
Pisiform fracture
Scaphoid fracture
Olecranon fracture
Lunate fracture
Olecranon fracture 
Triquetrum fracture
Pilon fracture
Cuneiform fracture