Sorry to hear about your Father. Tough load to carry.
I'd be interested to hear what components and type of surgery your friend had as well as any input/suggestions.... I'll pm you later today.
If going with a replacement it looks like the anterior approach is best all around. At my age and activity level it's likely I'm going to wear a total replacement out and will need another. That, and the ability to return to high level athletics, has me looking at resurfacing....but it's a longer recovery and there are possible complications. If a resurfacing wears out there is still a lot of bone left for a replacement.
