You're at the ER when you get the news: The tumble your kid took on his bike or that slip on the sports field left him with a broken bone. There are several ways to treat it, but a lot depends on the type of fracture, how severe it is, and your child's age.

Splints and Casts

Many broken bones (also called fractures) can be treated with a splint or a cast. They keep the bone from moving, which helps it heal. It also cuts down swelling and pain.

Splints

If your child has a minor fracture, a splint may do the trick. It works by supporting his bone on one side to keep it from moving around so it can heal.

Some splints are made of stiff plastic or metal. Others are made from plaster or fiberglass. It's molded to fit the injured area snugly and comfortably.

If your child's doctor gives him a splint, he'll wrap it with cloth, straps, or Velcro. This locks it into place. He may make adjustments as it heals.

If your child has a lot of swelling, his doctor may start with a splint, which is gentler and looser than a cast. When the swelling goes down, he'll remove it and put on a cast.

Casts

Most fractures need one. It surrounds the entire area that's broken, so it's stronger and better at protecting it than a splint.

Casts have two parts: A soft, inner layer that cushions the skin and a hard, outer layer that keeps the bone from moving.

There are two types:

Plaster of paris. If your child needs a strong hold, he may have a cast made from this. It's a thick paste that hardens quickly.

The upside is it's strong. The downside is that it's heavy and doesn't do well in water.

Synthetic or fiberglass. These casts are made from a moldable plastic. They're lighter than plaster of paris. The outer layer is fairly water-resistant, and some have a waterproof lining.

Nonsurgical Procedure

Sometimes the pieces of your child's broken bone aren't lined up right. You may hear his doctor call this a "displaced fracture."

In that case, the doctor will manipulate the bone pieces back into place. It's a nonsurgical procedure called a "closed reduction."

Lining up the pieces helps the bone grow back together in a straight position.

After it's over, your child's doctor will do an X-ray to make sure it's lined up right. Then he'll put on a cast. That keeps the bone fragments in the right position as they heal.

Surgery

If the break is too complicated for a closed reduction, your child's doctor may do a surgical procedure called an "open reduction." He'll make a cut in his skin and attach metal pins or plates to the bone fragments. This keeps them in place as they heal.

Medication

Your child's doctor may recommend an over-the-counter painkiller like acetaminophen (Tylenol) or ibuprofen for the first few days, or a prescription drug. He may also prescribe antibiotics to fight infection.

The Healing Process

Kids' bones are softer than those of grown-ups, so they often heal in less time than it takes adults. Young children often have a speedier recovery than teens.

You can expect your child to have a cast for about 4-8 weeks.

Even after your child's cast is removed, his bone will keep healing. At first, it will have a thick layer of new bone surrounding the area. This is called a callus and it feels like a knot or bump. It will gradually get smaller.

Taking Off the Cast

When your child's broken bone is healed, your doctor will remove his cast.

First he'll examine the area to make sure everything's OK. Then he'll use a special tool to take off the cast. It's like a saw but it has a dull blade that moves from side to side. It makes vibrations, which break the cast apart.

When it's off, he'll look at the injured area, check for pain, and see if your child has a good range of motion.

Your child's skin may be dry, flaky, or pale at first. He may have thicker, darker hair where the cast was. You may notice a funny smell. His muscles may be smaller and weaker. Don't worry. In time, it will get back to normal.

Your child may need to hold off on certain activities after his cast is removed. His doctor will tell you what's OK and when he can get back to the fun things he loves to do.

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