Abstract
Visualization of the nutrient foramen of the calcaneus is a useful differential sign which indicates that the area of triangular radiolucency, seen in the mid-portion of the calcaneus, represents a normal variant (simulated cyst), rather than a true solitary cyst of the calcaneus.
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References
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Kohler, A., Zimmer, E.A.: Borderlands of the normal and early pathologic skeletal roentgenology, 3rd Edition. New York: Grune and Stratton 1968
Sirry, A.: The pseudo-cystic triangle in the normal os calcis. Acta Radiol. 36, 516 (1951)
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Keats, T.E., Brent Harrison, R. The calcaneal nutrient foramen: A useful sign in the differentiation of true from simulated cysts. Skeletal Radiol. 3, 239–240 (1979). https://doi.org/10.1007/BF00360943
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DOI: https://doi.org/10.1007/BF00360943