Charcot foot is a condition causing weakening of the bones in the foot that can occur in people who have significant nerve damage (neuropathy). The bones are weakened enough to fracture, and with continued walking, the foot eventually changes shape. As the disorder progresses, the joints collapse and the foot takes on an abnormal shape, such as a rocker-bottom appearance.
Charcot foot is a serious condition that can lead to severe deformity, disability and even amputation. Because of its seriousness, it is important that patients living with diabetes—a disease often associated with neuropathy—take preventive measures and seek immediate care if signs or symptoms appear.
Charcot foot develops as a result of neuropathy, which decreases sensation and the ability to feel temperature, pain or trauma. Because of diminished sensation, the patient may continue to walk—making the injury worse. People with neuropathy (especially those who have had it for a long time) are at risk for developing Charcot foot. In addition, neuropathic patients with a tight Achilles tendon have been shown to have a tendency to develop Charcot foot.