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 Broken leg

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PostSubject: Broken leg   Broken leg EmptyWed Jan 05, 2011 9:43 pm

A broken leg (leg fracture) is a break or crack in one of the bones in your leg. A broken leg may be as simple as a hairline stress fracture, which is common in runners. Or it may be a severe, shattering break resulting from a serious car accident.

If you or your child has any signs or symptoms of a broken leg, seek immediate medical attention, especially if the break follows a fall or motor vehicle accident. Prompt diagnosis and treatment of a broken leg is critical to complete healing.

The right treatment for you or your child depends on the exact site and severity of the injury. A severely broken leg may require surgery to implant devices into the broken bone to maintain proper alignment during healing. Other injuries may be treated with a cast or splint until they're healed.


Symptoms

A broken thighbone is usually obvious, but other fractures may be more subtle. Signs and symptoms of a broken leg may include:

* Severe pain, which may worsen with movement
* Swelling
* Tenderness
* Bruising
* Obvious deformity or shortening of the affected leg
* Limited range of motion or inability to walk

Toddlers or young children with a broken leg may simply stop walking, even if they can't explain why.

When to see a doctor
If you or your child has any signs or symptoms of a broken leg, see a doctor right away. Delays in diagnosis and treatment can result in problems later, including poor healing.

Seek emergency medical attention for any leg fracture from a high-impact trauma, such as a car or motorcycle accident. Fractures of the thighbone are severe, potentially life-threatening injuries that require emergency medical services to help protect the area from further damage and to transfer you safely to your local hospital.


Causes

Your leg contains three major bones:

* The thighbone (femur). This is the longest and strongest bone in your body. It usually takes a great deal of force to break this bone.
* The shinbone (tibia). This is the major weight-bearing bone in your lower leg, and it's the most commonly broken long bone in your body. You can break the shinbone across its length, or you can break the portion of the bone that attaches to the knee joint or ankle joint.
* The fibula. This bone runs alongside the tibia below your knee. It's more commonly broken during ankle injuries.

Common causes of a broken leg

* Falls. Falling can fracture your thighbone or shinbone. Children can fracture these bones by falling on the playground, while toddlers can break these bones by falling over a toy or falling down the stairs while learning to walk.
* Significant trauma. All three leg bones can break during a motor vehicle accident. Shinbone fractures often occur when your knees become jammed against the dashboard during a collision.
* Sports injuries. Hyperextending your leg during contact sports can cause a broken leg. So can a direct blow — such as from a hockey stick or opponent's body — or falling while climbing or biking.
* Child abuse. In children, a broken leg may be the result of child abuse.
* Overuse. Stress fractures are tiny cracks that develop in the weight-bearing bones of your body, including your tibia. Stress fractures are usually caused by repetitive force or overuse, such as running long distances, jumping, marching or ballet dancing. But they can also occur with normal use of a bone that's been weakened by a condition, such as osteoporosis.


Risk factors

Participating in certain physical activities or having certain health conditions may put you or your child at increased risk of a broken leg.

Physical activities
Stress fractures are often the result of repetitive stress to the leg bones from physical activities, such as:

* Running
* Ballet dancing
* Basketball
* Marching

Contact sports, such as hockey and football, also may pose a risk of direct blows to the leg, which can result in a fracture.

Health conditions
Stress fractures are more common in people who have:

* Decreased bone density (osteoporosis)
* Flat feet or high-arched feet
* Diabetes
* Rheumatoid arthritis


Complications

Complications of a broken leg may include:

* Knee or ankle pain. A broken bone in your leg may produce pain in your knee or ankle.
* Poor or delayed healing. A severe leg fracture may not heal quickly or completely. This is particularly common in an open fracture of your tibia because of lower blood flow to this bone. Fractures that occur in people who use tobacco may take longer to heal and be at higher risk of nonunion.
* Bone infection (osteomyelitis). If you have an open fracture, your bone may be exposed to fungi and bacteria that can cause infection.
* Nerve or blood vessel damage. Fracture of the leg can injure adjacent nerves and blood vessels. Seek immediate medical help if you notice any numbness or circulation problems.
* Compartment syndrome. This neuromuscular condition causes pain, swelling and sometimes disability in muscles near the broken bone. This is a rare complication that is more common with high-impact injuries, such as a car or motorcycle accident.
* Arthritis. Fractures that extend into the joint can cause osteoarthritis years later. So can poor bone alignment. If your leg starts to hurt long after a break, see your doctor for an evaluation.
* Unequal leg length. The long bones of a child grow from the ends of the bones, in softer areas called growth plates. If a fracture goes through a growth plate, that limb might eventually become shorter or longer than the opposite limb.


Preparing for your appointment

Depending on the severity of the break, your family doctor or the emergency room physician may recommend that you or your child be examined by an orthopedic surgeon.

What you can do
You may want to write a list that includes:

* Detailed descriptions of the symptoms and the precipitating event
* Information about past medical problems
* All the medications and dietary supplements you or your child takes
* Questions you want to ask the doctor

What to expect from your doctor
During the physical exam, your doctor will inspect the affected area for tenderness, swelling, deformity or an open wound. He or she will probably want to see X-rays of the injury.


Tests and diagnosis

X-rays can usually pinpoint the exact location of the break and determine the extent of injury to any adjacent joints. Occasionally, your doctor may also recommend more-detailed images using computerized tomography (CT) or magnetic resonance imaging (MRI).


Treatments and drugs

Treatment of a broken leg will vary, depending on the type of break. Fractures are classified into one or more of the following categories:

* Open (compound) fracture. In this type of fracture, the skin is pierced by the broken bone. This is a serious condition that requires immediate, aggressive treatment to decrease your chance of an infection.
* Closed fracture. In closed fractures, the surrounding skin remains intact.
* Incomplete fracture. This term means that the bone is cracked but it isn't separated into two parts.
* Complete fracture. In complete fractures, the bone has snapped into two or more parts.
* Displaced fracture. In this type of fracture, the bone fragments on each side of the break are not aligned. A displaced fracture may require surgery to realign the bones properly.
* Comminuted fracture. This term means that the bone is broken into several pieces. This type of fracture also may require surgery for complete healing.
* Greenstick fracture. In this type of fracture, the bone cracks but doesn't break all the way through — like when you try to break a green stick of wood. Most broken bones in children are greenstick fractures, because a child's bones are softer and more flexible than those of an adult.

Setting the leg
Initial treatment for a broken leg usually begins in an emergency room or urgent care clinic. Here, doctors typically evaluate your injury and immobilize your leg with a splint. If you have a displaced fracture, your doctor may need to manipulate the pieces back into their proper positions before applying a splint — a process called reduction. Depending on the amount of pain and swelling you have, you may need a muscle relaxant, a sedative or even a general anesthetic before this procedure.

Immobilization
Restricting the movement of a broken bone in your leg is critical to proper healing. To do this, you may need a splint or a cast. And you may need to use crutches or a cane to keep weight off the affected leg for six to eight weeks or longer.

Medications
To reduce pain and inflammation, your doctor may recommend an over-the-counter pain reliever, such as acetaminophen (Tylenol, others) or ibuprofen (Advil, Motrin, others) or a combination of the two. If you're experiencing severe pain, you may need an opioid medication, such as codeine.

Therapy
After your cast or splint is removed, you'll likely need rehabilitation exercises or physical therapy to reduce stiffness and restore movement in the injured leg. Because you haven't moved your leg for a while, you may even have stiffness and weakened muscles in uninjured areas. Rehabilitation can help, but it may take up to several months — or even longer — for complete healing of severe injuries.

Surgical and other procedures
Immobilization heals most broken bones. However, you may need surgery to implant internal fixation devices, such as plates, rods or screws, to maintain proper position of your bones during healing. These internal fixation devices may be necessary if you have the following injuries:

* Multiple fractures
* An unstable or displaced fracture
* Loose bone fragments that could enter a joint
* Damage to the surrounding ligaments
* Fractures that extend into a joint
* A fracture that is the result of a crushing accident
* A fracture in particular areas of your leg, such as your thighbone

Most internal fixation materials are left in place. Others may be removed after your bone heals, while some are made of materials that are absorbed into your body. Complications are rare, but can include wound-healing difficulties, infection and lack of bone healing.

For some injuries, your doctor may also recommend an external fixation device — a frame outside your leg attached to the bone with pins. This device provides stability during the healing process and is usually removed after about six to eight weeks. There's a risk of infection around the surgical pins connected to the external fixation device.


Prevention

A broken leg can't always be prevented. But these basic tips may reduce your risk:

* Build bone strength. Calcium-rich foods, such as milk, yogurt and cheese, can help build strong bones. A calcium or vitamin D supplement also may improve bone strength. Ask your doctor if these supplements are appropriate for you.
* Wear proper athletic shoes. Choose the appropriate shoe for your favorite sports or activities. And replace athletic shoes regularly. Discard sneakers as soon as the tread or heel wears out or if the shoes are wearing unevenly.
* Cross-train. Alternating activities can prevent stress fractures. Rotate running with swimming or biking.
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