Open Fracture: How It Differs from a Closed Fracture and How It Is Identified

A fracture is a break in the integrity of a bone when the load exceeds its strength. The presence of a wound over the fracture site affects both the risk of infection and how urgent the care must be. Below is how to distinguish an open fracture from a closed one and what exactly the doctor assesses.

What a fracture is

A bone breaks when the pressure on it exceeds its strength. A crack and a complete break are the same phenomenon: size is not what matters. A fracture can be traumatic (a blow, a fall from a height, a road traffic accident) or pathological, when a bone is destroyed by disease and breaks under minimal load. A separate variant is a stress fracture from repetitive loading, for example during running.

Complete fractures are distinguished — without displacement or with displacement of the fragments — and incomplete ones: cracks and partial breaks. The fracture line can be transverse, longitudinal, oblique, or spiral, and in a comminuted fracture there is no single line. Severity depends on the size of the damaged bones and their number: multiple fractures of large tubular bones cause massive blood loss and traumatic shock.

Open fracture: definition and signs

An open, or compound, fracture is a fracture in which there is a wound or a break in the integrity of the skin near the site of bone damage. Most often the wound is made by the bone fragment itself, which tears through the soft tissues and skin at the moment of injury. The picture can vary: sometimes the bone protrudes from the wound, sometimes the wound is no larger than a puncture, but damage to muscles, tendons, nerves, veins, and arteries can be extensive. The doctors' rule is simple: any acute injury with a wound in the fracture zone is considered an open fracture.

• a visibly displaced or deformed limb or joint;
• swelling, bruising, or bleeding;
• severe pain, numbness, and tingling;
• damage to the skin with protruding bone;
• inability to move the limb or bear weight on the leg.

Closed fracture and how it differs from an open one

A closed fracture is bone damage without injury to the soft tissues that penetrates to the fracture site: the bone does not communicate with the external environment. The skin over the area is intact, while deformity, swelling, pain, and loss of support are visible. It can be difficult to distinguish a fracture from a dislocation by eye; both conditions require emergency care.

The difference between an open and a closed fracture is not in the severity of the bone itself but in the wound. In a closed fracture, bacteria from soil, glass, grass, dirt, and clothing do not get inside. In an open fracture, contaminants are introduced into the wound, and the dirtier the site of injury, the higher the contamination. Therefore the approach is different: the emphasis is immediately on preventing infection, not only on aligning the fragments.

What a fracture looks like on an X-ray

X-ray is the basic examination. The image shows the number of fractures in the bone, the position of the fragments and the degree of their separation, that is, displacement. If the data are insufficient, computed tomography or another type of imaging is ordered. In an open fracture, the examination is supplemented by assessment of the wound: they check whether muscles, tendons, nerves, veins, and arteries are affected and whether blood flow below the injury site is preserved. In the emergency department, they find out how and where the injury occurred: the circumstances suggest the degree of contamination.

Why open fractures are dangerous

The main danger is infection, and it is real from the first minute. The more severely the bone and soft tissues are destroyed, the higher the risk. Bone infection is difficult to treat: it requires prolonged treatment and several operations, and in extreme cases, when it cannot be stopped and there is a threat to life, amputation is possible.

The second threat is damaged soft tissues: muscles, tendons, nerves, veins, arteries. Such injuries are more often sustained in road traffic accidents and other high-energy incidents, and then the victim often has other injuries. Among the complications of fractures in general are traumatic shock, bleeding, fat embolism, wound infection, osteomyelitis, and sepsis.

When urgent medical help is needed

An open fracture is a reason to seek emergency care immediately: the wound must be cleaned as soon as possible to reduce the risk of infection. Closed fractures also require a doctor's attention, even if the skin is intact and the pain is tolerable.

In the hospital, the general condition is assessed, other injuries are looked for, the wound is examined, sensation and blood flow are checked, and questions are asked about past illnesses and medical history. Almost all open fractures are treated surgically: the wound is cleaned of contaminants and damaged tissues, and the bone is stabilized.

103 or 112 — if bone is visible in the wound, bleeding is severe, the skin below the injury is pale, cold, or bluish, there is numbness, the victim loses consciousness, a fracture of the head, neck, back, pelvis, thigh, or upper part of the leg is suspected, or the injury cannot be immobilized on site.

This material is for reference: it explains the principles but does not replace a doctor's consultation — the approach is determined by the examination and imaging.

This content is for reference and does not replace a doctor's consultation. Medical disclaimer