Re: SROM-THR lasts a life time:

[Guest guest]

>

> A THR with the same size femoral ball as a BHR will yield a similar

> range of motion

Ok, all other things being equal and no anatomical problem which

would limit ROM with a surf job this might be true.

> but an " old style " THR with a 24 to 26 mm femoral head

> will not give you anything close to the same range of motion of a

BHR

I don't recall anyone comparing " old style " THR to surf jobs. It

appears that you are stretching the discussion outside the bounds of

current hip replacement practice in attempt to make an unsupported

assertion appear valid.

Better luck next time ;^)

bilat C+ July 02 Dr. S

[Guest guest]

:

One other point. Don't think that the " old style " 24-25 mm THRs are

not being installed today. I had an OS tell me just last year it was

the " gold standard " . I did run (well, hobble with my cane) the heck

out of his office.

> >

> > A THR with the same size femoral ball as a BHR will yield a similar

> > range of motion

>

> Ok, all other things being equal and no anatomical problem which

> would limit ROM with a surf job this might be true.

>

>

> > but an " old style " THR with a 24 to 26 mm femoral head

> > will not give you anything close to the same range of motion of a

> BHR

>

> I don't recall anyone comparing " old style " THR to surf jobs. It

> appears that you are stretching the discussion outside the bounds of

> current hip replacement practice in attempt to make an unsupported

> assertion appear valid.

>

> Better luck next time ;^)

>

> bilat C+ July 02 Dr. S

[Guest guest]

....If I may restate: A

> properly installed THR with a similar sized femoral ball will yield

> similar range of motion results as a resurf.

>

:

Do you have any evidence to back this up??

My doc told me that I would get the same ROM from a 36mm m/m THR as

with my 58mm C+ surf job. My rock climbing friend has two SROM 36mm

m/m THR's and has much more ROM than I do. This is due to his more

flexible pre-surgery soft tissue condition.

The only diff I am aware of vis a vis bearing diameter is that the

dislocation rate (not ROM) declines with increasing bearing diameter

up to I think about 32mm, then the dislocation rate does not decrease

for larger diameter THRs. This study is posted on Jeff Cranston's

Hip Universe site.

Once again, you claim that bearing diameter of THR must be similar to

surf job to give similar ROM.

This is not correct based on the experience of my friend and the

advise of my doc. If you have any evidence to back up your claim,

please bring it on. Your opinions repeatedly stated as fact without

offering any supporting documentation indicates that you don't know

what you are talking about.

Cheers!

bilat C+ July 02 Dr. S