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Chapter 6 Knee Patella Knee Joint • Distal ___________ • Proximal __________ • __________ Patella • Anterior to _________ • Superior to __________ • Flat Triangular bone Patella • __________ – Inferior border • __________ – Superior border Knee Joint Ligaments • ________ Collateral Ligament (____) – Fibular Collateral Ligament • ______ Collateral Ligament (____) – Tibial Collateral Ligament Patellar ___________________ –Patella to Tibial tuberosity Knee Joint Ligaments • __________ Cruciate Ligament (____) – Femur to Posterior Tibia • _________ Cruciate Ligament (____) – Femur to Anterior Tibia Joint Capsule Bursa • _________ Filled • ____________ Bursa • Infrapatellar Bursa Menisci • ______________ “Shock Absorbers” – Medial – Lateral Knee Imaging Routine • • • • • • AP Lateral Internal Oblique External Oblique Tunnel 65 kV AP Knee • Pt ________ • Rotate leg ____________to align epicondyles __________ to table • CR ______________to apex of patella • Collimate to skin • ______________a tube angle** Lateral Knee • • • • • • Position for ___________projection Flex Knee ___________ Epicondyles should be ___________ to table _________cephalad angle Center mid knee Collimate to knee Medial (Internal) Oblique • • • • Position as AP Rotate leg _____________ CR ____________to apex of patella Shows – ___________ Condyle in profile – Proximal __________ joint Lateral (External) Oblique • • • • Position as AP Rotate leg _________ lateral CR ____________to patella Shows – ___________ Condyle in profile Tunnel View • Many ways to position. • Prone – Flex knee _________ – CR ___________ to Tib/Fib to midpopliteal crease • Supine – Flex knee ___________ – Raise cassette as close to the knee as possible – CR ______________ to Tib/Fib. ½” distal to patella apex Patella Imaging Routine • • • • • PA Lateral Axial (Sunrise) 40” SID 60 kV PA Patella • • • • Pt Prone Rotate leg ____________ Center mid _____________ Collimate to skin Lateral Patella • • • • Position as per _________ Knee Flex knee ____________ CR to midfemoropatellar joint Collimate down to ________ Axial Patella (Sunrise) • • • • If Prone ______________ Angle tube _____________cephalad Center at petellofemoral joint Collimate to patella • MANY other ways to get it ______________ Axial Patella (Sunrise) • • • • • If Supine Flex ____________ Have pt hold ____________knee Angle tube cephalad to be ___________to IR Collimate to patella
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