It most likely comes from a forseful twist of the arm!!
To add to that: it's caused by an extreme muscle contraction, in other words it's actually your arm muscles that break you upper arm bone! the break curves around the bone, hence the name. also known as "ball thrower's fracture". it's a relatively rare type of injury, which i unfortunately have at the moment. i tripped over a brick walkway and landed on my shoulder on the grass. my muscles tensed up to protect me but ironically did so so severely that my arm broke! from personal experience i can add that it's extremely painful and uncomfortable, esp because it's my right arm and i am a jeweler.
A fracture in the second third of the humerus. Humerus being the bone that your biceps lies on.
Spiral bone fractures, or any fracures for that matter, could be caused by malnourishment of the bones. Weak bones=more breaks and fractures. Bone injury is almost always a result of trauma, however.
The right upper arm bone is broken into multiple pieces at the place where that bone is most likely to break.
The best way to understand this is to look at a skeleton. YOu can see how the head of the humerus anchors right into the clavicle. Press gently on the head of the humerus parallel to the floor and note the pressure the condial exerts in that direction, and the tendency for the clavicle to move, thus indicating it too is being pressed upon. As these bones are in contact, impact is transmitted from one to the other, thus creating a potential for fracture.
The humerus. Edit: Its the humerus its easy to remember because of the phrase "funny bone" funny=humorous=humerus
A fracture in the second third of the humerus. Humerus being the bone that your biceps lies on.
it depends on the fracture if surgery is required and the recovery period
A Stress fracture
Spiral Fracture
A spiral fracture.
The humerus.
spiral fracture
Spiral
This is called an open fracture of the humerus.
Earthquake causes fracture of the ground.
it will die
In English, this is a spiral fracture.