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Chapter 7 Knee Patella Knee Joint • Distal Femur • Proximal Tibia • Patella Patella • Anterior _______________ • Superior to ______________ • Flat Triangular bone Patella • ________________ – Inferior border • ______________ – Superior border Knee Joint Ligaments • _____________________________ – Fibular Collateral Ligament • ____________________________ – Tibial Collateral Ligament _____________________________ –Patella to Tibial tuberosity Knee Joint Ligaments • ___________________________ – Femur to Posterior Tibia • ___________________________ – Femur to Anterior Tibia Joint Capsule Bursa • ______________ Filled • Suprapatellar Bursa • ______________ Bursa Menisci • ____________________________ – Medial – Lateral Knee Imaging Routine • • • • • • AP Lateral Internal Oblique External Oblique Tunnel 65 kVp AP Knee • Pt Supine • Rotate ______________to align epicondyles parallel to table • Center _______________to apex of patella • Collimate to skin • Might need _________________ Lateral Knee • Position for mediolateral projection • Flex ________________ • Epicondyles should be _____________ to table • ______________angle • Center mid knee • Collimate to knee Medial (Internal) Oblique • • • • Position as AP Rotate leg _______________ Center _____________to apex of patella Shows – Lateral _____________ in profile – Proximal_________________joint Lateral (External) Oblique • • • • Position as AP Rotate leg ____________ Center ____________to patella Shows – Medial ____________ in profile Tunnel View • Many ways to position. • Prone – Flex knee ________________ – CR perpendicular to _______________ • Supine – Flex knee ______________ – Raise cassette as close to the knee as possible – CR _______________________________to patella apex Patella Imaging Routine • • • • • PA Lateral Axial (Sunrise) 40” SID 60 kVp PA Patella • • • • Pt Prone Rotate leg _____________ Center mid Patella Collimate to skin Lateral Patella • • • • Position as per Lateral Knee Flex knee ____________ CR to _________________ joint Collimate down to patella Axial Patella (Sunrise) • • • • If Prone Flex ________________ Angle tube ____________________ Center at petellofemoral joint Collimate to patella • __________________ other ways to get it Axial Patella (Sunrise) • • • • If Supine Flex _________________ Have pt _________________________ Angle tube ___________________ to be perpendicular to IR • Collimate to patella
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