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Author Topic: weight of bmhr device  (Read 1615 times)

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BI-LAT

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weight of bmhr device
« on: July 29, 2013, 09:40:41 PM »
Hi, Just curious how much the BMHR device weighs. head and cup combined. I have a BHMR BI-LAT.  just curious what it adds to my overall weight.  bi-lat.

Dan L

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  • LBHR Dr Brooks, 10/2011; RBHR 2/2012
Re: weight of bmhr device
« Reply #1 on: July 30, 2013, 09:57:05 AM »
If you mean a Birmingham Hip Resurfacing implant system, my surgeon told me about 18 - 20 ounces.  I am bi lat with BHR and have 2.2 - 2.4 lbs of cobalt chrome goodness inside of me.

He also shared that the amount of bone removed is "crumbs" so there is a net gain by having the implants.

Thanks

Dan
« Last Edit: July 30, 2013, 09:58:08 AM by Dan L »
LBHR Dr Brooks, 10/2011; RBHR 2/2012

Dannywayoflife

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Re: weight of bmhr device
« Reply #2 on: July 30, 2013, 12:33:12 PM »
The BMHR is different mate. It will weigh slightly more as more bone is resected and replaced by metal. However I believe the mini stem used in the BMHR is made from titanium so fairly light (but heavier than bone).

Danny
Train hard fight easy
LBHR 10/11/2011 Mr Ronan Treacy Birmingham England
60mm cup 54mm head
Rbhr 54mm head 60mm cup 12/02/15 Ronan Treacy ROH Birmingham England
;)

Tin Soldier

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Re: weight of bmhr device
« Reply #3 on: July 30, 2013, 08:08:04 PM »
I'll bet those two devices BHR and BHMR are pretty similar in weights.  In general, either one will likely add a couple pounds to your weight as a bi-lat.  70% Co, 30% Cr., and a little Mo.  They're not called heavy metals for nothing, although they are actually some of the lighter heavy metals in that family.

Crumbs of Calcium, yeah, I've seen the photos.   :o  yikes.     
LBHR 2/22/11, RBHR 8/23/11 - Pritchett.

hippy hippy shake

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Re: weight of bmhr device
« Reply #4 on: July 31, 2013, 12:38:53 PM »
Tin,

Where did you get the info on the percent composition of the BHR?

Thanks,

HHS
Bilateral BHR 4/18/2013
Dr. Su

Dannywayoflife

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Re: weight of bmhr device
« Reply #5 on: July 31, 2013, 01:47:07 PM »
HHS the bhr is made from vitalium that's the rough % composition of that alloy if you google it it will give you loads of data ;)
Train hard fight easy
LBHR 10/11/2011 Mr Ronan Treacy Birmingham England
60mm cup 54mm head
Rbhr 54mm head 60mm cup 12/02/15 Ronan Treacy ROH Birmingham England
;)

fenceman

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Re: weight of bmhr device
« Reply #6 on: July 31, 2013, 02:20:49 PM »
You mean that the extra 20 lbs on the scale isn't due to the weight my Bi-lat BHR device?  :o
L-BHR - Aug 2008 - Dr. Brooks  Cleveland Clinic Main Campus
R-BHR - Dec 2012 - Dr. Brooks  Cleveland Clinic Euclid Hospital
L-BHR Revision Nov 2017 - Dr. Brooks Euclid

hippy hippy shake

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Re: weight of bmhr device
« Reply #7 on: July 31, 2013, 03:15:57 PM »
HHS the bhr is made from vitalium that's the rough % composition of that alloy if you google it it will give you loads of data ;)

Thanks Danny!
Sometimes it's nice to understand some of the details.
And now I know that vitallium makes some nice rings too! ;D
Bilateral BHR 4/18/2013
Dr. Su

Dannywayoflife

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Re: weight of bmhr device
« Reply #8 on: July 31, 2013, 05:59:47 PM »
Your welcome ;)
Train hard fight easy
LBHR 10/11/2011 Mr Ronan Treacy Birmingham England
60mm cup 54mm head
Rbhr 54mm head 60mm cup 12/02/15 Ronan Treacy ROH Birmingham England
;)

Tin Soldier

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Re: weight of bmhr device
« Reply #9 on: August 05, 2013, 08:15:34 PM »
Sorry, I'm a little late.  McMinn's book, "Modern Hip Resurfacing" has the break down for at least the BHR composition.  I'm not sure if each maker has there own little spin on some proprietery alloy, but as Danny points out the general term used is Vitalium and I think it got started in the 50s as an internal prosthetic material.  I don't think there is much variance if any between makers.  Probably all comes from the same alloy maker.   Also, several of the commonly referenced papers, often have the break down.  Most commonly though, when folks discuss metals/metallosis,... they often just say 70% Co and 30% Cr and forget about the rest of the metals. 
LBHR 2/22/11, RBHR 8/23/11 - Pritchett.

 

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