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7 - Knee Joint - D3

7 - Knee Joint - D3 - KneeAnatomy Disorders By Nour Abu...

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Disorders  By : Nour Abu Al-Sha’ar
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Knee Anatomy Knee Anatomy - The Knee Joint is the largest & most complicated joint in the body . - It consists of 3 Joints within a single synovial cavity : 1) Medial Condylar Joint : Between the medial condyle “of the femur” & the medial condyle “of the tibia” . 2) Latral Condylar Joint : Between the lateral condyle “of the femur” & the lateral condyle “of the tibia” . 3) Patellofemoral Joint : Between the patella & the patellar surface of the femur .
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Types : - 3 : Planar gliding .
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Anatomical Components of the Anatomical Components of the Knee Knee 1) Capsule : Surrounds the sides & posterior aspect of the joint… On the frontal side , the capsule is absent . On each side of the patella , the capsule is strengthened by the tendons of Vastus Lateralis & Vastus Medialis .
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2) Ligaments : A] Extracapsular Ligaments : - Ligamentum Patellea ((a continuation of the Quariceps Femoris muscle )) - Lateral Collateral Lig. - Medial Collateral Lig. - Oblique Popliteal Lig (( derived from the Semimembranosus muscle )).
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B ) Intracapsular Ligaments : Cruciate Ligaments : 2 strong ligaments that cross each other within the joint cavity . ~ Anterior Cruciate Ligament (ACL) : = Attached to the anterior intercondylar area of the tibia , passes upward , backward & laterally to get attached to the lateral femoral condyle . = Prevents posterior displacement of the femur (( With the knee joint flexed , the ACL prevents the tibia from being pulled anteriorly)) . ~ Posterior Cruciate Ligament (PCL) : = Attached to the posterior intercondylar area of the tibia , passes upward , forward , & medially to get attached to the medial femoral condyle . = Prevents anterior displacement of the femur (( With the knee joint flexed , the PCL prevents the tibia from being pulled posteriorly )) .
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- The medial and lateral menisci are 2 C-shaped sheets of fibrocartilage between the tibial & femoral condyles - their inner border is thin & forms a free edge . - Each meniscus is attached to the upper surface of the tibia by anterior & posterior horns . - They are connected to each other by the transversa ligament and to the margins of the head of the tibia by coronary ligaments. -
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7 - Knee Joint - D3 - KneeAnatomy Disorders By Nour Abu...

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