This is not good news. Hip injuries are very serious business. I see Kotsay at 1st as needed. And we probably see more of Lugo at short with Green at 3rd in some cases. OYE! When Lowrie (spelled correctly, I hope) comes back, and provided he can produce offensively, Green can play 3rd with Youk back at 1st. No need to panic.
I'm sorry about Lowell. I like the guy. I hope he doesn't go on the DL but it may be in the cards at some point if the hip injury continues to be aggravated by playing.