Often, people don't know they have an os trigonum if it hasn't caused any problems. However, some people with this extra bone develop a painful condition known as os trigonum syndrome.
For the person who has an os trigonum, pointing the toes downward can result in a "nutcracker injury". Like an almond in a nutcracker, the os trigonum is crunched between the ankle and heel bones. As the os trigonum pulls loose, the tissue connecting it to the talus is stretched or torn and the area becomes inflamed.
The signs and symptoms of os trigonum syndrome may include:
- Deep, aching pain in the back of the ankle, occurring mostly when pushing off on the big toe (as in walking) or when pointing the toes downward
- Tenderness in the area when touched
- Swelling in the back of the ankle
Relief of symptoms is often achieved through treatments that can include a combination of the following:
- Rest. It is important to stay off the injured foot to let the inflammation subside.
- Immobilization. Often a walking boot is used to restrict ankle motion and allow the injured tissue to heal.
- Ice. Swelling is decreased by applying a bag of ice covered with a thin towel to the affected area. Do not put ice directly against the skin.
- Oral medication. Nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen, may be helpful in reducing the pain and inflammation.
- Injections. Sometimes cortisone is injected into the area to reduce the inflammation and pain.
If you believe have a foot problem and do not currently see a podiatrist, call one of our six locations to make an appointment.
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