Severe breaks may require an operation to hold the bone together with metal plates and screws.

　　Next，a person usually gets a cast put arount the area of the break.Casts are usually worn for one to two months.The hard bandage holds the bone in place while it heals.

　　In some cases，instead of a cast，a splint made of plastic or metal will be placed over the area to restrict movement.

　　Doctors say broken bones should be treated quickly because they can restrict blood flow or cause nerve damage.Also，the break will start to repair itself，so you want to make sure the bone is lined up correctly.

　　Bones need calcium and vitamin D to grow and reach their full strength.Keeping your bones strong with exercise may also help prevent fractures.

　　Wearing safety protection like elbow pads and leg guards during activities is a good idea.If you think these might be restrictive ，try a cast.

　　1．How do doctors call a broken bone scientifically？(no more than 2 words)

　　________________________________________________________________________

　　2．What kind of fractures are found mostly among children？(no more than 2 words)

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　　3．Generally，if people have a fracture，will they die very soon？(no more than 3 words)

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