I had my hip replaced 2 years ago. I had the Stryker hip prosthesis implanted that had the mobile bearing end on it.
http://www.stryker.com/en-us/product...bearing/139617 This implant gave me a greater range of movement as I was only 41 when I had the implant put in. I am a heavy person as well.
I was told by my doctor to put as much weight on my hip as pain allowed me to. I walked the night of my implant for 6 steps without crutches. I never did have to use a walker and I was totally off crutches in 4 or so weeks.
http://www.aboutstryker.com/hip/expe...s/recovery.php
I still need to lose some weight, but have not had any issues with my implant. As far as mobility goes I can not do the splits anymore
and have to watch how I move sometimes.
As was mentioned I would screen your doctor very well before your surgery.