# he struck Jacob's hip, so that his hip was dislocated 

"he struck Jacob's hip and dislocated it" or "he struck Jacob's hip and injured it"

# his hip was dislocated 

Possible meanings are that 1) the top of Jacob's leg bone moved out of the hole in the hip where it normally is, or 2) a muscle or something that attaches the top of the leg to the hip was torn.