sorry to hear about your hips. I too am a 31 year old male, and have been told that I require both my left and right hips & knees to be replaced.
I am also very keen on my weight training / bodybuilding, however have also been delaying the surgery because of a fear that post-surgery I will have to (even further) curtail my activity level.
The orthopaedic surgeon that I saw in australia said that due to my age the most appropriate type of replacement is 'hip resurfacing', which essentially seems to be a new ball in the socket. Apparently, this procedure has been performed in australia for the past 11 years, so unfortunately he was not able to inform me as to how long I could expect to get out of the replacement.
Do you know what type of procedure they are recommending for young active people in the usa?
Fyi, whist researching bodybuilding and hip replacements I came across an article that mentioned a fellow by the name of george turman, who apparently placed in a body-building competition post-hip replacement. Hopefully, I will be able to track him down and check his thoughts....