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The Knee JointFEMURLateral condyle Medial condylelntercondylar fossaFEMURMedial condyleLateral condyleTibial TuberosictyMedial MalleolusTIBIATIBIAMedial condyleLateral condyleTibial TuberosictyMedial MalleolusTIBIAAnterior medial surfaceInsertion for semitendonosis, semimembranosis, gracilis, and sartoriusGerdy’s tubercleIliotibial band insertion•Head •Lateral malleolusFIBULA•A ‘sesamoid’ (floating) bone•Protection•Mechanical advantage to quads. •Without the patella, 30% more force would be required by the quads PATELLA•Femur •medial condyle•lateral condyle•Tibia•medial condyle•lateral condyle•tibial tuberoscity•Gerdy’s tubercle •Fibula - head•PatellaThe KneeKnee Ligaments and Cartilage•Lateral•Medial•attached to medial meniscusCollateral LigamentsCruciate LigamentsAnterior Cruciate Ligament•Inferior end: proximal posterior tibia •Superior end: distal posterior to middle femurAnteriorPosteriorPosterior Cruciate Ligament•Two on each of the tibia, loosely attached, thicker to the outside.•Functions:1. Stabilization2. Shock absorption3. LubricationMenisci•Medial meniscus is “C” shaped.•Lateral meniscus is “O” shaped.AnteriorPosteriorMenisciMenisciWhat landmark of the tibia does the patella tendon insert on?Patellar ligamentThe deviation between the line of pull of the rectus femoris and the patellar ligament. The Q-AngleMovements of the KneeExtensionFlexion•Internal Rotation•External RotationMovements of the


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EIU PED 2440 - The Knee Joint

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