How much force does it take to break (fracture) the human scapula (shoulder blade)?
That would depend on the person whose scapula you are referring to. In most cases, a child’s bones will break more easily than will a young adult’s bones whereas the bones on an elderly person will break more easily than a child’s bones. Depending on your age you will have a more elastic type quality to your bones or will have a more brittle property to your bones. The more elastic then the more give your bones will have and the more brittle the less give they will have. Also some people have to deal with disease and illnesses that can change the strength or their bones making them more susceptible to a break at a lower applied force. You really cannot say that a human scapula will break with X amount of force across the board because each individual person will vary. Well if you just need a general answer, then you can look at it like this. On average a human bone can sustain 40 times the amount of force as can concrete. On average concrete can sustain a force of 3,000 psi. So 40 x 30
