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andym
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Joined: 16 Nov 2010
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PostPosted: 19:05 - 17 Dec 2014    Post subject: You learn something new every day... Reply with quote
I shared someone's video on facebook yesterday, and just noticed this comment someone made about it:

https://img.photobucket.com/albums/v320/andy36586/Bone_zps5ec3f27d.png
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MarJay
But it's British!



Joined: 15 Sep 2003
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PostPosted: 19:16 - 17 Dec 2014    Post subject: Reply with quote
Depends on the bone. I was told it takes less than 2lb of pressure to break a finger, and not much more to break a collarbone.
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Wafer_Thin_Ham
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Joined: 18 Nov 2005
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PostPosted: 21:17 - 17 Dec 2014    Post subject: Reply with quote
mpd72 wrote:
Depends on lots of things. I doubt many people on here will have less than 8 pounds per square inch pressure on foot bones when just standing up, or the sane figure on the pelvis when going through dangerous procedures like sitting down.


It'd be like an egg Shirley?

If you put force through it top to bottom then they're pretty strong. Force in the wrong direction, they are far weaker.
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covent.gardens
World Clap Champion



Joined: 09 Jun 2012
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PostPosted: 22:33 - 17 Dec 2014    Post subject: Reply with quote
No idea what this thread is about.

"Unwilling to tap to a very..." ?

The comment goes on about BRAKING (his/her poor spelling, not mine) a bone then says he "should have taped"?
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andym
World Chat Champion



Joined: 16 Nov 2010
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PostPosted: 23:42 - 17 Dec 2014    Post subject: Reply with quote
covent.gardens wrote:
No idea what this thread is about.

"Unwilling to tap to a very..." ?

The comment goes on about BRAKING (his/her poor spelling, not mine) a bone then says he "should have taped"?


Best not to watch it at work I guess.....

https://www.facebook.com/video.php?v=933855379988146&set=vb.708313339209019&type=2&theater

But from the above quote... I think he was pointing out that it only took 8psi to break the arm


Also if you had read what the picture said
Quote:
Graphic video of shoulder popping from Kimura
or did you miss that part?
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Tungtvann
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Joined: 07 Dec 2012
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PostPosted: 23:53 - 17 Dec 2014    Post subject: Reply with quote
I'd like to see an actual source for that.
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covent.gardens
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Joined: 09 Jun 2012
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PostPosted: 01:51 - 18 Dec 2014    Post subject: Reply with quote
"Shoulder popping from Kimura" - Sounded like a dance.

What's all this about "taped"? Did he mean to put tapped?

Do you actually listen to scientific statements ("8 inches of pressure per square inch to BRAKE a bone") made by people who can't spell or communicate whatsoever? It's obvious to me that the pressure per square inch required to break a bone will vary depending on what bone it is, the health and age of the bone, the gender of the person whose bone it belongs to, etc. This fella hasn't managed to write two sentences properly and what he has said, after deciphering it, is grossly oversimplified at best.

I've unfriended people over less.
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andym
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Joined: 16 Nov 2010
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PostPosted: 07:59 - 18 Dec 2014    Post subject: Reply with quote
covent.gardens wrote:
"Shoulder popping from Kimura" - Sounded like a dance.


I thought it was the name of the fighter to begin with Embarassed

Anyway:

Quote:
Bone is extraordinarily strong — ounce for ounce, bone is stronger than steel, since a bar of steel of comparable size would weigh four or five times as much. A cubic inch of bone can in principle bear a load of 19,000 lbs. (8,626 kg) or more — roughly the weight of five standard pickup trucks — making it about four times as strong as concrete.


Or a different answer to "How many pounds of pressure to break a human bone" can be found here:

https://answers.yahoo.com/question/index?qid=20060823155315AAPQ7X5
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DrDonnyBrago
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Joined: 03 Jan 2010
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PostPosted: 08:54 - 18 Dec 2014    Post subject: Reply with quote
You keep the company of a moron.

That is all.
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Lord Percy
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Joined: 03 Aug 2012
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PostPosted: 08:54 - 18 Dec 2014    Post subject: Reply with quote
Laughing 8lbs per square inch doesn't make any sense at all in relation to breaking bones like that. Absolute nonsense Laughing

lbs/sq.inch is a unit of pressure, which can act at any point.

'8lbs/sq.inch' suggests you could get a cubic inch block of pure bone material, place it flat on a table, put an 8lb weight on it and it would be crushed like a dry sandcastle. Aside from it being probably wrong, its completely useless in relation to the video.
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Llama-Farmer
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Joined: 23 Jan 2012
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PostPosted: 11:16 - 18 Dec 2014    Post subject: Reply with quote
It'll depend on far more variables than that.

- the bone in question
- type of fracture
- age, gender, fitness, health
- mechanism of injury
- direction of force to the bone
- dissipation of force in the bone


When I was at school, I saw a very fit and healthy person turn around on the spot and go down with a spiral fracture of their tibia.
That same person a year previous had got up uninjured from a horrendously sickening tackle in a football match against another school that everyone thought he'd broken his leg in for sure.
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andym
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Joined: 16 Nov 2010
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PostPosted: 13:29 - 18 Dec 2014    Post subject: Reply with quote
Llama-Farmer wrote:
It'll depend on far more variables than that.

- the bone in question
- type of fracture
- age, gender, fitness, health
- mechanism of injury
- direction of force to the bone
- dissipation of force in the bone


When I was at school, I saw a very fit and healthy person turn around on the spot and go down with a spiral fracture of their tibia.
That same person a year previous had got up uninjured from a horrendously sickening tackle in a football match against another school that everyone thought he'd broken his leg in for sure.


I don't know if you watched the video, but 2 fairly fit looking fighters, guy on the canvas has the guy on top in an arm lock (kimura), and keeps pulling and pulling and eventually the arm snaps (what appears to be) about 2/3 up the humerus.... which even the article about it says it was a 'freak accident'.

DrD.... I'm not saying he's a bullshitter.... but he IS a bullshitter.

I imagine there are bones that probably would break with that amount of force by applying it quickly with a very narrow edge, but I imagine it would be a lot more than 8psi even wrenching it like a 1 arm bandit.
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Llama-Farmer
World Chat Champion



Joined: 23 Jan 2012
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PostPosted: 15:11 - 18 Dec 2014    Post subject: Reply with quote
andym wrote:

I don't know if you watched the video, but 2 fairly fit looking fighters, guy on the canvas has the guy on top in an arm lock (kimura), and keeps pulling and pulling and eventually the arm snaps (what appears to be) about 2/3 up the humerus.... which even the article about it says it was a 'freak accident'.


Yes I saw the video.

But not sure what the point of your original post is.
Do you believe the comment, do you agree with it, disagree?


I wouldn't call it a "freak accident".

It was an armlock with a lot of force applied to the arm... maybe not malicious or intended, but not freak I don't think.

That'd be like saying it was a "freak accident" when someone jumped off a high wall and broke their leg.

There was quite a comparatively high possibility given the situation.


dictionary wrote:

freak
friːk
noun
1.
a very unusual and unexpected event or situation.




8 pounds per square inch is a quantity unit of pressure anyway. A force acting on an arm (as in a lever, not the limb) with a pivot point is much more likely to cause a break.



Such as this...

https://i.telegraph.co.uk/multimedia/archive/00733/sport-graphics-2004_733759a.jpg

Force acting on the back of the leg... whilst the leg is in a fixed position (i.e. foot planted on the ground so leg cannot move) so all of the force is transmitted to the bone
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thx1138
World Chat Champion



Joined: 06 Oct 2005
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PostPosted: 21:26 - 18 Dec 2014    Post subject: Reply with quote
I've had my finger trapped under a Olympic plate before and didn't break it Question
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Old Thread Alert!

The last post was made 11 years, 57 days ago. Instead of replying here, would creating a new thread be more useful?
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