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Chapter 6

Chapter 6. Calcaneus Ankle. Calcaneus. Os Calcis Articulates with ___________(Subtalar joint) __________ 3 articulating surfaces (facets) ____________ Middle Anterior. Calcaneus. __________________ Medial process __________________ Trochlea Process Lateral process

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Chapter 6

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  1. Chapter 6 Calcaneus Ankle

  2. Calcaneus • Os Calcis • Articulates with • ___________(Subtalar joint) • __________ • 3 articulating surfaces (facets) • ____________ • Middle • Anterior

  3. Calcaneus • __________________ • Medial process • __________________ • Trochlea Process • Lateral process • __________________ • Forms Sinus Tarsi • _________________ • Posterioinferior

  4. Calcaneous ImagingOs Calcis Routine • Plantardorsal • Lateral • 40” SID • 65 kV

  5. Plantardorsal • Pt Supine • __________________ • Angle ____________________ • Center at base of ____________and exit at the level of lateral malleolus • Collimate to calcaneus

  6. Lateral Calcaneus • Position patient for __________ projection • ___________________ • Use a pillow under knee if needed to ensure no tilt • Center ___________to medial malleolus • Collimate to include calcaneous

  7. Ankle • Consists of: • Distal ______________ • Talus • Synovial _____________

  8. Distal Tibia/Fibula • __________________ • Extended portion of distal Fibula • _________________ – Extended portion of distal Tibia

  9. Distal Tibia • Anterior ______________ – Process off anterior distal tibia • ______________ – Flattened portion lateral distal aspect

  10. Ankle • ___________ – Space formed by inferior Tib/Fib and where superior talus fits. • _____________ • The “ceiling” of the mortise.

  11. Imaging the Ankle Routine • AP • Lateral • Internal / External Oblique • 60 kV • 40” SID

  12. AP Ankle • Dorsiflex foot. Ankle to form __________ • No Foot rotation • Center Mid ankle _______________ • Collimate to skin

  13. Lateral Ankle • Position patient for _________ projection • _________ aspect of foot against cassette • Dorsiflex foot to ___________ • Use a pillow under knee if needed to ensure no tilt • Center at _______________ • Collimate to include _______________

  14. Internal Rotation • Place Ankle in AP and rotate ________ • Center ___________________

  15. Ankle Mortise • Place ankle __________ • Rotate ________________ • CR between _____________ • Collimate to the skin laterally

  16. External Rotation • Place Ankle in AP • Rotate _______________ • Center between _____________ • Collimate to the skin laterally

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