splay

turned outward in an ungainly manner

splay knees

an outward bevel around a door or window that makes it seem larger

move out of position

dislocate joints

the artificial hip joint luxated and had to be put back surgically

turn outward

These birds can splay out their toes

ballet dancers can rotate their legs out by 90 degrees

spread open or apart

He splayed his huge hands over the table