What is an os trigonum fracture?

The os trigonum is an inconsistently present accessory bone of the foot situated at the posterolateral aspect of the talus. It may be radiographically confused with fractures of the posterior process of the talus. Fracture of the os trigonum per se is extremely rare.

How is os trigonum syndrome diagnosed?

Diagnosis

1. X-ray: An os trigonum may be seen on an X-ray, which is a test that visualizes the structure of the bones.
2. Computerized tomography (CT) scan: This test can be used to assess bone structure and swelling, and it can identify an os trigonum.

What does os trigonum pain feel like?

Signs & Symptoms of Os Trigonum Syndrome 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.

How long does it take to recover from os trigonum?

The os trigonum is easily removed. Postoperatively a very short course of immobilization of 3-4 days is done to allow the skin to heal and then early range of motion to prevent scar tissue formation is allowed. Slow return to sports and dance in as little as 10-14 days. A full return can take ten or more weeks.

How is os trigonum treated?

Treatment of Os Trigonum Syndrome usually begins with nonsurgical treatment. Non-surgical treatment options include rest, immobilization/bracing, anti-inflammatory medications, physical therapy and corticosteroid injections. Surgery may be determined necessary, typically after 3-6 months of non-surgical treatment.

Is os trigonum serious?

Os Trigonum is a small extra bone that sits at the back of the ankle joint. This extra bone is present in 5-15% of the general population. In some cases, an Os Trigonum can cause ankle pain during sport, also known as posterior ankle impingement.

Does os trigonum cause pain?

Os Trigonum Diagnosis Generally, Os Trigonum causes pinching at the back of the ankle. This pinching occurs when you point your foot, such as a ballet dancer who assumes a pointe position or a footballer striking a ball. Typically, pain is felt at the back of the ankle and is called posterior ankle impingement.

How do I fix os trigonum?

Surgery to remove the os trigonum involves a 3 to 4 cm curved incision made at the rear of the foot, through which the extra bone is dissected. The heel bone is then smoothed and the wound sealed with stitches.

Does os trigonum require surgery?

Most patients’ symptoms improve with non-surgical treatment. However, in some patients, surgery may be required to relieve the symptoms. Surgery typically involves removal of the os trigonum, as this extra bone is not necessary for normal foot function.

Is os trigonum a disability?

The Veteran’s OS trigonum, left ankle, is currently rated under 38 C.F.R. § 4.71a, Diagnostic Code 5271, for limited motion of the ankle. Under those criteria a 10 percent rating is assigned for moderate limitation of motion and a 20 percent rating is assigned for marked limitation of motion.