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The Knee Joint

The Knee Joint. Largest and Most Complex Joint. Structure of the Knee. Lateral and Medial Epicondyles on both femur and tibia Tibial Tuberosity front of tibia

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The Knee Joint

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  1. The Knee Joint Largest and Most Complex Joint

  2. Structure of the Knee • Lateral and Medial Epicondyles • on both femur and tibia • TibialTuberosity • front of tibia • Patellofemoral Joint – patella held in place by the quadraceptendon (above), patellar lig. (below), and intervening fibers that form a pocket • Medial and Lateral Condyle (femur) • Intercondylarfossa (femur) • Intercondylar eminence (tibia)

  3. Menisci • Circular rims of fibrocartilage on the articular surfaces of the head of the tibia

  4. Menisci • Thick on the outside – get thinner on the inside • Deepen the joint and serve as shock absorbers • Inner edges are free, but the other borders are attached loosely to the rim of the head of the tibia • Medial and Lateral Meniscus

  5. Ligaments • Patellar lig., Medial (tibial) Collateral lig., Lateral (fibular) Collateral lig., Oblique Popliteallig., Anterior Cruciatelig., Posterior Cruciatelig., Transverse lig., Iliotibial tract

  6. Movements • Flexion and Extension • Inward and Outward rotation in the non-weight bearing flexed position

  7. Muscles of the Knee Joint Anterior (Extension) Posterior (Flexion) Hamstring group Biceps femoris Semimembranosus Semitendinosus Sartorius Gracilis Popliteus Gastrocnemius • Quadracepsfemoris group • Rectus femoris • Vastusintermedius • Vastuslateralis • Vastusmedialis

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