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Anatomy Atlases: Illustrated Encyclopedia of Human Anatomic Variation: Opus V: Skeletal Systems: Duplication of the Great Toe

Illustrated Encyclopedia of Human Anatomic Variation: Opus V: Skeletal Systems

Various Shapes of the Sella Turcica as seen radiographically

Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD

Peer Review Status: Internally Peer Reviewed


A-F:Principal variations in sellar shape according to H.T. Martin:

  1. round
  2. oval
  3. flat (shallow)
  4. deep
  5. quadrangular
  6. distorted, contracted

G:"Sellar monstrosity" of Carstens. It lacks any real fossa; correspondingly, the hypophysis is inadequate.

H-L:various types of bridging

M:Schneider's "pseudo-bridging."

N:Raab's variant; tall, clumsy dorsum.

O:Fossa rounded and small, low wide dorsum, and posterior clinoid processes may be present or lacking.

Redrawn from Zimmer, E.A. A Köhler, and E.A. Zimmer Borderlands of the Normal and Early pathologic in Skeletal Roentgenology, 3rd American Ed., translated and edited by S.P. Wilk, Grune & Stratton, New York, 1968.

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