My Brother (He's 51) got ran over on New Year's Eve, four years ago. They didn't check him at the time for a Hip injury. He got discharged from Hospital, but he recently felt like he was suffering from Sciatica. His Doctor referred him back to Hospital and the x-rays confirmed the Doctor's fears. A small piece of bone had fractured off and the socket was cracked. He's been told that they cannot do a replacement until he's of pensionable age!
Being someone who has worked in a Sports Shop and sold Running Shoes for 2½ years, I would SUGGEST that you stay in the pool, as you will strengthen the joint without the impact travelling up your leg. You might have to be a little more patient. I would also stay off Treadmills too, for the foreseeable future.