A bone may be completely fractured or partially fractured in any number of ways (cross-wise, lengthwise, in the middle).
Fractures can happen in a variety of ways, but there are three common causes:
- Trauma accounts for most fractures. For example, a fall, a motor vehicle accident or a tackle during a football game can all result in a fracture.
- Osteoporosis also can contribute to fractures. Osteoporosis is a bone disease that results in the "thinning" of the bone. The bones become fragile and easily broken.
- Overuse sometimes results in stress fractures. These are common among athletes.
Doctors usually use an X-ray to verify the diagnosis. Stress fractures are more difficult to diagnose, because they may not immediately appear on an X-ray; however, there may be pain, tenderness and mild swelling.
- Closed or simple fracture. The bone is broken, but the skin is not lacerated.
- Open or compound fracture. The skin may be pierced by the bone or by a blow that breaks the skin at the time of the fracture. The bone may or may not be visible in the wound.
- Transverse fracture. The fracture is at right angles to the long axis of the bone.
- Greenstick fracture. Fracture on one side of the bone, causing a bend on the other side of the bone.
- Comminuted fracture. A fracture that results in three or more bone fragments.
As soon as a fracture occurs, the body acts to protect the injured area, forming a protective blood clot and callus or fibrous tissue.
New "threads" of bone cells start to grow on both sides of the fracture line. These threads grow toward each other.
The fracture closes and the callus is absorbed.
Doctors use casts, splints, pins, or other devices to hold a fracture in the correct position while the bone is healing.
- External fixation methods include plaster and fiberglass casts, cast-braces, splints, and other devices.
- Internal fixation methods hold the broken pieces of bone in proper position with metal plates, pins, or screws while the bone is healing.
Even after your cast or brace is removed, you may need to continue limiting your activity until the bone is solid enough to use in normal activity.
Usually, by the time the bone is strong enough, the muscles will be weak because they have not been used. Your ligaments may feel "stiff" from not using them.
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