![]() ![]() The back of the tibia where the bone breaks is covered with cartilage. It is important for a posterior malleolus fracture to be diagnosed and treated properly because of the risk for developing arthritis. Some studies have shown that if the piece is bigger than 25% of the ankle joint, the ankle becomes unstable and should be treated with surgery. There can also be a fracture of the medial malleolus.ĭepending on how large the broken piece is, the back of the ankle may be unstable. This is because it shares ligament attachments with the posterior malleolus. In most cases of posterior malleolus fracture, the lateral malleolus (fibula) is also broken. For some ankle fractures, an MRI scan may be done to evaluate the ankle ligaments.Ī posterior malleolus fracture is a fracture of the back of the tibia at the level of the ankle joint. These tests provide high resolution images of both bones and soft tissues, like ligaments. It is especially useful when the fracture extends into the ankle joint. This type of scan can create a cross-section image of the ankle and is sometimes done to further evaluate the ankle injury. This x-ray is done to see if certain ankle fractures require surgery.Ĭomputed tomography (CT) scan. Depending on the type of ankle fracture, the doctor may put pressure on the ankle and take a special x-ray, called a stress test. X-rays may be taken of the leg, ankle, and foot to make sure nothing else is injured. They can also show how many pieces of broken bone there are. X-rays can show if the bone is broken and whether there is displacement (the gap between broken bones). X-rays are the most common and widely available diagnostic imaging technique. If your doctor suspects an ankle fracture, he or she will order additional tests to provide more information about your injury. ![]()
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