>>LOL!!! From what I have heard, cemented hip replacements tend to last around10 years while uncemented last from 20 - 25.

Uncemented is very popular in the USA but the big international registries show that uncemented vs cemented is more to do with patient age and revision rates. Hot off the press: http://www.wjgnet.com/2218-5836/pdf/v5/i5/591.pdf .

Not sure why so many journals focus on 10 years: in your case you ought to be considering 20-30 years.

Also see http://www.ncbi.nlm.nih.gov/pubmed/21915574 and http://informahealthcare.com/doi/abs/10.3109/17453674.2014.957088 . The first observes that special coated cups have a higher rate of revision but the second questions whether these expensive fancy-pants coatings make any difference good or bad. The point for observers is that medicine is an inexact science and always we peer through a glass darkly... especially when 20 year survival is so important but cannot be stated until the thing has been in people for 20 years and/or starts failing. Which is one of the reasons why I like the Exeter hip: a million of those things have been inserted and there's plenty still working well after 40 years. The most recent paper looking at Exeter hips from the early 1970s found a survival rate assessed by aseptic stem loosening of > 93%, though in fairness there were only 26 patients still around!