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  • noun

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a mouth or mouthlike opening

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a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals

the left eye

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rigid connective tissue that makes up the skeleton of vertebrates

References in periodicals archive ?
The types of bony impingement are an os trigonum, Stieda's process (Christian Hermann Ludwig Stieda, German anatomist, 1837-1918), or Shepherd's fracture (Francis J.
A Rare Co-Existence of Os Accessorium Supracalcaneum and Os Trigonum.
Os trigonums, especially small ones, rarely need surgery, although that's not even a big deal since an endoscope the size of a drinking straw removes the bone.
However, presences of chronic polyarthritis and progressive loss of joint motions with enlargement of the metacarpal and phalangeal epiphyses, mega os trigonum and spinal abnormalities including platyspondyly make our case an exceptional and interesting one.
This bony fragment could correspond to an os trigonum.
The os trigonum syndrome: use of bone scan in the diagnosis.
Ayak bilegi lateral grafisinde talus posterior kesiminde os trigonum saptanirken, manyetik rezonans goruntuleme (MRG) incelemesinde os trigonumda kemik iligi odemi ve cevre yumusak dokularda tenosinoviti gosteren sinyal degisiklikleri gorulmektedir.
Posterior-ankle impingement syndrome due to os trigonum syndrome
Hindfoot endoscopy enables an overview of the intimate relationship between the os trigonum (or posterior [Stieda's] process of the talus) and the FHL tendon and allows for good judgment of the posterior ankle pathology.
It is important not to dismiss a fracture fragment located at the posterosuperior aspect of the talus as a normal variant an accessory ossicle called the os trigonum.
We discuss some of the more commonly symptomatic bones, namely the os acromiale, os styloideum, metacarpal and hallux sesamoids, patella, os trigonum, os calcaneus secundarius, accessory navicular, os peroneum, and os intermetatarseum.
In his book Diseases and Injuries of Ballet Dancers, published in 1982, he described operative treatment of FHL tendinopathy and posterior impingement of an os trigonum or hypertrophic posterior process of the talus (Stieda's process).
Other structural issues, like knock knees or the presence of extra foot bones such as an accessory navicular (associated with certain types of flat feet) or an os trigonum (located behind the ankle), may make pointework too difficult and painful.
19-21) Stenosing tenosynovitis can also be associated with an os trigonum.
This study is a retrospective case series of 40 ankles in 38 dancers who underwent os trigonum excision via an open posteromedial approach with FHL tenolysis between 2000 and 2013.