Scheduled for the morning of July 29th for right total hip with Dr Grey in Tampa Florida, I have some questions about post op like how long afterwards do you need an Ice machine? do people actually buy used ones. Mine is due to Avascular Necrosis. I have been told by one rehab center that was on the list that they have their own. Im thinking maybe i can save money buy buying a used one for home once im out of rehab. Also Sleeping, I currently cant sleep unless im in a recliner, how long does it take to change that?