CEA test: Carcinoembryonic antigen test is to detect response to therapy in cancer patients, especially colon cancer, with normal range of less than 2.5 (less than 5 in heavy smokers). Note that a positive test may not always be indicative of cancer.
Os Trigonum Syndrome. An Os Trigonum is a small, extra bone found at the back of the ankle in approximately 5-10% of people. Often it goes completely unnoticed, not causing any problems.
â¢ 4Bilateral occurs in 50% of os trigonum population. Mechanism of Injury: â¢ Os trigonum syndrome occurs due to repetitive, forceful plantarflexion (or pointing). This commonly affects dancers, especially those assuming the extreme plantarflexed position that pointe work requires.