According come the internet, you can break a clavicle by applying just seven pounds of force. I know it’s a pretty typical fracture, but seven pounds seems suspiciously low; the slightly much less than the load of a gallon that water.

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Where ~ above the clavicle, and also in what direction, can I apply seven pounds of force in bespeak to rest it?

When i was 10, I broke my left clavicle when tackled play football (without any kind of padding and also the critical play of the day). My doctor commented it might be broken moving by motioning his outstretched hand in a not-very-fast downward chop.

No this is false. You have the right to rest a twenty pound load on your collar bone, background a similar weight, and so on without break it obviously.

It is true the collar bone is reasonably fragile. The factors for why this might be room a issue of part debate. Biomechanics researches (orthopedists love biomech studies) imply that over 1500N are forced in axial load. Tension, shear, and twisting forces will decrease this in one unpredictable means (the clavicle has actually a reasonably irregular shape) yet it’s far more than 7 lbs.

Really_Not_All_That_Bright march 1, 2016, 8:09pm #5

The clavicle is much stronger than that kind of story would lead you to believe. It forms the major part of the upper extremity indistinguishable of the pelvic girdle, so extensively speaking it is kind of a pelvis. And the pelvis is really strong. Of course, the scapular girdle is not almost as strong as the pelvis in humans due to the fact that we nothing walk on our hands, however we’re no that far removed from pets who do.

As a general rule, bone is very solid against compression and really weak in stress (which is the opposite pattern to our connective tissues). For this reason the easiest method to rest a clavicle is more than likely to pull it except the ends v some shearing pressure added.

Machine_Elf in march 1, 2016, 9:47pm #6

Biomechanics studies (orthopedists love biomech studies) indicate that over 1500N are compelled in axial load.

Which is more like 337 pounds.


Tension, shear, and also twisting pressures will decrease this in an unpredictable means (the clavicle has actually a reasonably irregular shape) but it’s far more than 7 lbs.

OK, for this reason “7 pounds to rest a clavicle” is sort of choose “a duck’s quack no echo, and also no one to know why”, i.e. That an apocryphal bullshit factoid the keeps obtaining passed roughly without refutation. Thanks!

SpeedwayRyan march 2, 2016, 3:51pm #7

At around age 13, I damaged mine through dropping a gallon of ice cream cream ~ above it. Ns was putting a bucket of ice cream back in the freezer as soon as it slipped out of mine hands and the edge hit mine clavicle. That wasn’t badly broken, however it was poor enough I had to undertake an stroked nerves brace for number of weeks while that healed. That gallon of ice cream more than likely weighs 6-8 pounds and dropped probably much less than a foot prior to striking the bone, so it’s certainly true that it no take lot force, assuming that it’s used in simply the right spot in just the ideal way.

Gary_T march 2, 2016, 4:19pm #8

In the midst of this discussion, ns wonder who clavicle? A five-year-old’s? A 12-year-old’s? A 25-year-old’s? A 95-year-old’s? seems to me there can be some significant differences.

doorhinge march 2, 2016, 5:44pm #9

The clavicle screams “Break me! break me!”. It has no defense to speak of; there’s just a slim layer of skin in between it and the outside world. Additionally, both end of the bone are relatively immobile. A bottom strike come the clavicle is (mostly)transfer to the spinal shaft by way of the sternum, scapula, and also ribs. The spine is particularly configured to protest this type of compressive force and provides specifically the kind of resistance necessary to make such a win effective.


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I’m not sure exactly how these alleged clinical sources tested the clavicle to it’s breaking point. 7 pounds every square customs could, if it’s used in the most reliable manner, rest a bone the dimension of a clavicle. But who’s clavicle? one NFL defensive tackle? more than likely not. A 130 lb bookworm? Probably. An average medical cadaver native India? Possibly.

The pointy end of a six pound blacksmith sledge hammer

wouldn’t require much speed to cracked a bone. While the bones of a forearm are totally free to swing away from a 7 psi strike, the clavicle is supported at both ends and held ridged by the chest and also spine.

Blue_Blistering_Barnacle in march 2, 2016, 6:11pm #10

Bruce Lee might break her clavicle simply by looking at it. While the is true the his same does not exist today, adept practioners the OS-do deserve to fracture smaller bones (such together the hyoid) by deftly and firmly depressing a combination of tricks on a traditional keyboard. Ns don’t recognize which keys, exactly, yet I’m pretty certain that among them is CTRL.


Actually, IRL, healthy and balanced bones are very strong, but it deserve to be amazing how often bones sustain major stresses without breaking, yet fail against relatively minor trauma presented just the not correct way.

aux203 march 3, 2016, 5:30pm #11

The clavicle is lot stronger 보다 that type of story would lead you come believe. It forms the major part the the top extremity identical of the pelvic girdle, so generally speaking the is sort of a pelvis. And the pelvis is really strong. Of course, the scapular girdle is not almost as strong as the pelvis in humans since we don’t walk on our hands, yet we’re no that far removed from pets who do.

As a basic rule, bone is very strong against compression and really weak in tension (which is the opposite sample to ours connective tissues). For this reason the easiest means to break a clavicle is more than likely to traction it except the ends with some shearing pressure added.

What on earth?!? Literally nobody of what you composed is true.

The shoulder girdle is certain nothing like the pelvis and also it works very differently native a functional and anatomic perspective. This is true even in quadrapeds. At finest you might say they room both joints. That’s about it.

Bone is a type of connective tissue.

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Bone is slightly more powerful in compression 보다 tension yet the two space quite similar when it comes to ultimate yield strength. The idea the bone is weak in stress and anxiety is ludicrous. If friend pulling a bone apart from the ends (?!?) is simpler than applying some lateral stress, you space insane.