Transcript Chapter 6
Chapter 7 Calcaneus Ankle Calcaneus • Os Calcis • Articulates with – ___________(Subtalar joint) – __________ • 3 articulating surfaces (facets) – ____________ – Middle – Anterior Calcaneus • __________________ – Medial process • __________________ – Trochlea Process – Lateral process • __________________ – Forms Sinus Tarsi • _________________ – Posterioinferior Calcaneous Imaging Os Calcis Routine • • • • Plantardorsal Lateral 40” SID 65 kVp Plantardorsal • • • • Pt Supine __________________ Angle ____________________ Center at base of ____________and exit at the level of lateral malleolus • Collimate to calcaneus 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 Ankle • Consists of: – Distal ______________ – Talus • Synovial _____________ Distal Tibia/Fibula • __________________ – Extended portion of distal Fibula • _________________ – Extended portion of distal Tibia Distal Tibia • Anterior ______________ – Process off anterior distal tibia • ______________ – Flattened portion lateral distal aspect Ankle • ___________ – Space formed by inferior Tib/Fib and where superior talus fits. • _____________ – The “ceiling” of the mortise. Imaging the Ankle Routine • • • • • AP Lateral Internal / External Oblique 60 kVp 40” SID AP Ankle • Dorsiflex foot. Ankle to form __________ • No Foot rotation • Center Mid ankle _______________ • Collimate to skin 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 _______________ Internal Rotation • Place Ankle in AP and rotate ________ • Center ___________________ Ankle Mortise • • • • Place ankle __________ Rotate ________________ CR between _____________ Collimate to the skin laterally External Rotation • • • • Place Ankle in AP Rotate _______________ Center between _____________ Collimate to the skin laterally