Measuring wear and tear...

[Dannywayoflife]

I agree with you mate. It will put stress on the area but unless thrown arkwardly I think that other activities put far more impact on the joint. My ROM is not far off fully recovered already and in the hydro pool today was far better on my bhr side than on my natural side with nothing wrong with it! My strength is really comming on so come the 12 month point will be back to normal. My surgeon told me he didn't see a problem with me doing judo. So touch wood I'll be able to train in it again.

[triathlete98]

Yeah once you are full range you'll be good.  Uchi mata might be a little difficult at first but after a while good as new.

[triathlete98]

http://www.youtube.com/watch?v=R43op-tg-_E

enjoy best throw in judo.

[Dannywayoflife]

Never been an uchi mata man anyway. My silly I phone won't let me load the video I'll have to watch it in the morning when I get home.

[Tin Soldier]

Once again, I vaguely recall (my hips are better, but my memory is failing ???), a study that looked at metal ions in blood after heavy activity.  That might work in the early period of working the components in, but I'm not sure if that would work after the component has been worked in.

I can't remember where I read that, but it would be kind fun? maybe to be in a study where you would measure your blood before an event and then measure after to see if there is much of a difference.  Although, I think with the low concentrations, you'd have to be very careful with your environmental factors contributing to elevated levels in the blood.  Nice thing about Co is that it is not very common in soil, foods, chemicals,...

The next thing you could possibly do is a mass balance of the the blood metals concentration and try to sum up the amount of metal that has come off the device.  Although, you might have those metals locked up in fat cells, muscle, syn fluid, bone,...?  On second thought, that might be hard to compare at such low levels. 

[Dannywayoflife]

Realisticly I can't see blood metal levels being used to measure any wear rates as there's way too many variables that could effect the numbers. But from what we've seen from recovered THR's that lasted out to 40+ years wear is hardly an issue and don't forget that the bhr was designed using the same proven metallurgy as these THR's for this very reason. The alloy has been proven to be a long term viable material.