Kin 3305 Knee Presentation

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    THE KNEEANDREA ANDERSEN

    COURTNEY DEVORE

    SHAUNNA PURKEY

    RICARDO SANCHEZ

    ERROL TONGCO

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    INTRODUCTION

    Knee joint is primarily a hinge joint

    Four movements: flexion, extension, external rotation, and

    internal rotation

    The knee is highly necessary for weight bearing and locomotion

    On a regular basis, the knee can undergo stress from extraweight, strain, compression, and torsion

    What contributes to a strong knee joint:

    Knee muscles: extensor and flexor muscles

    Strong ligaments: provides stability

    Meniscus: provides cushioning

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    KNEE FLEXION

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    MUSCLES INVOLVED

    Biceps Femoris

    Origin long head : ischial tuberosity; short head : lower half of the linea aspera andlateral condyliod ridge

    Insertion head of the fibula and lateral condyle of the tibia

    Popliteus

    Origin posterior surface of lateral condyle of the femur

    Insertion upper posterior medial surface of the tibia

    Semi Membranosus

    Origin ischial tuberosity

    Insertion posteromedial surface of the medial tibial condyle

    Semi Tendinosus

    Origin

    ischial tuberosity

    Insertionupper anterior medial surface of the tibia just below the condyle

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    BICEPS FEMORIS

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    SEMI MEMBRANOSUS

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    SEMI TENDINOSUS

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    STRETCHES

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    KNEE EXTENSION

    The act of straightening the knee or kicking theleg out.

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    Knee ExtensionMuscles Involved

    Rectus femoris

    Vastus intermedius (Deep to Rectusfemoris)

    Vastus lateralis (externus)

    Vastua medialis

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    KNEE EXTENSION

    RECTUS FEMORIS MUSCLE

    The rectus femoris

    extends the knee. Originates on the

    anterior side of theilium.

    Insertion on thetibial tuberosity,and patella.

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    KNEE EXTENSIONVASTUS INTERMEDIUS

    Origin: on the upper anterior surface

    of femur

    Insertion: upper border of the

    patella, and tibial tuberosity.

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    Knee ExtensionVastus Intermedius

    K E i

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    Knee ExtensionVastus Lateralis

    Origin: anterior inferior border of greater trochanter

    Insertion: tibial tuberosity, and the patella

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    KNEE EXTENSION

    VASTUS MEDIALIS Origin, medial condyloid ridge, and linea aspera.

    Insertion medial upper half of patella.

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    Knee ExtensionStretches

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    KNEE EXTENSIONSTRETCHES

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    Hyper-extension of the Knee

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    EXTERNAL ROTATION

    Rotary movement of the lower leg

    laterally away from the midline

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    MUSCLE INVOLVEDBiceps Femoris (lateral hamstring)

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    Biceps femoris externally rotates lower leg at the flexed knee

    Rotation of the knee occurs when it is flexed at about 20 degrees

    Rotation of the knee allows pivoting movements and changing in

    direction of the body

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    Develop biceps femoris through hamstring curls

    http://youtube.com/v/F488k67BTNo
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    DAILY LIFE ACTIVITIES

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    DAILY LIFE ACTIVITIES

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    STRETCHINGStretch biceps femoris muscle by extending the knee while flexing the

    externally rotated hip

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    STRETCHING

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    INTERNAL ROTATION

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    MUSCLE ORIGIN INSERTION

    Popliteus Posterior surface of

    lateral condule of

    femur

    Upper posterior

    medial surface of

    tibia

    Semi-

    membranosus

    Ischial tuberosity Postero-medial

    surface of the

    medial tibialcondyle

    Semi-tendinosus Ischial tuberosity Upper anterior

    medial surface of

    the tibia just below

    the condyle

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    REAL LIFE EXAMPLES

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    STRETCHES

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    STRETCHES

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    STRETCHES

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    THE END

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    SUMMARY SLIDE:

    ANDREA ANDERSEN

    Knee Flexion: Slides 3-15

    COURTNEY DEVORE

    Knee External Rotation: Slides 28-36

    SHAUNNA PURKEY Knee Extension: Slides 16-27

    RICARDO SANCHEZ

    Knee Internal Rotation: Slides 37-43

    ERROL TONGCO

    Intro: Slide 2 + Compiling & Designing Powerpoint