Os tibiale externum or sesamoid in the tendon of tibialis posterior

The Journal of Foot and Ankle Surgery : Official Publication of the American College of Foot and Ankle Surgeons
D J BareitherN J Feldman

Abstract

From a total of 165 foot and lower leg cadaveric specimens, 38 specimens were selected by palpation of the region of the tuberosity of the navicular for the possible presence of an accessory bone. Specimens were radiographed and dissected to reveal the presence of an accessory bone and its relationship to the tibialis posterior tendon. Nineteen of the specimens exhibited hypertrophy of the tibialis posterior tendon and 19 specimens exhibited an accessory bone. Specimens exhibiting an accessory bone were divided into two categories. In one group, the accessory bone was located in the tibialis posterior tendon prior to its division and was separated from the tuberosity by at least 3 mm. In the other group, the accessory bone was located in the main segment of the tibialis posterior tendon, connected to the tuberosity of the navicular by fibrous tissue, and, in some cases, exhibited a central cavity between the accessory bone and tuberosity. The accessory bone of specimens in the first group was considered to be a sesamoid in the tibialis posterior tendon and the accessory bone in the second group was an ossicle considered to be the os tibiale externum. Linking the os tibiale externum to the tibiale component of the primitive tetr...Continue Reading

References

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Citations

Nov 15, 2013·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Andrea DonovanRonald Steven Adler
Aug 24, 2010·Seminars in Roentgenology·Brian PetersenKen Schreibman
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Mar 4, 2009·Foot & Ankle International·Jin-Wa Chung, In-Tak Chu
Jun 19, 2002·Journal of the American Podiatric Medical Association·R D Lee EvansStephanie Sanders
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Oct 11, 2019·Anatomy & Cell Biology·Meridith K DeLuca, Laura C Boucher
Jul 31, 2019·Biological Reviews of the Cambridge Philosophical Society·Virginia AbdalaMaría L Ponssa

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