In reply to Fickalli: I had a metal on metal hip resurfacing 3 years ago, just before I turned 60, after about five years of increasing arthritic pain which eventually made alpine work unbearable. Having the operation was like turning the pain off at the flick of a switch. I was pretty fit when I went under the knife. After the operation I was doing light turbotraining at week 3, walking, road biking and light climbing wall work at week 6 and back into full training at week 12. The main risk in the initial recovery period is dislocation, so in-line exercise is good but no bridging or twisting. Since the operation I'm mountaineering, cycling and climbing (summer & winter) better than ever, did my first E3 earlier this year and am hoping to onsight 6c/7a in Kalymnos next month - not too bad at 63... But be aware there are some current concerns about higher failure rates with metal on metal hip prostheses, compared to metal on plastic ones, and about the potential effects of raised blood cobalt and chromium levels...