Slideshow: Clavicle

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Post on 08-Jan-2017

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  • The Clavicle

  • The Clavicle is a long bone

    It is horizontally placed

  • The Clavicle is a long bone

    It is horizontally placed

  • The medial end of the Clavicle articulates with the manubrium at the Sternoclavicular Joint

  • The lateral end of the Clavicle articulates with the acromion of the scapula at the Acromioclavicular Joint

  • The Clavicle is divided into thirds along its lengthUndersurface of Right Clavicle

  • Lateral ThirdThe lateral third is flattened and expandedUndersurface of Right Clavicle

  • Medial ThirdThe medial third is rounded Undersurface of Right Clavicle

  • The Clavicle is curved convex forwards at its medial endLateral Medial Posterior Anterior

  • The Clavicle is concave forwards at its lateral endLateral Medial Posterior Anterior

  • There are a number of impressions on the undersurfaceLateral Medial Posterior Anterior

  • This area gives attachment to the Trapezoid ligament

    Lateral Medial Posterior Anterior This is one of the two coracoclavicular ligaments that stabilise the acromioclavicular joint

  • This area gives attachment to the Conoid ligamentLateral Medial Posterior Anterior This is one of the two coracoclavicular ligaments that stabilise the acromioclavicular joint

  • This area gives attachment to the costoclavicular ligament that arises from the first costal cartilage and first ribLateral Medial Posterior Anterior

    It stabilises the sternoclavicular joint

  • Sternoclavicular Joint

  • ManubriumCostoclavicular Ligament anterior fibres

  • ManubriumCostoclavicular Ligament posterior fibres

  • ManubriumAnterior Sternoclavicular Ligament

  • Manubrium

  • Manubrium

  • Manubrium

  • Manubrium

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  • ManubriumArticular Disc

  • Muscles that attach to the Clavicle

  • Muscles that attach to the ClavicleLateral Medial Posterior Anterior Deltoid

  • Muscles that attach to the ClavicleLateral Medial Posterior Anterior Pectoralis Major

  • Muscles that attach to the ClavicleLateral Medial Posterior Anterior Subclavius

  • Muscles that attach to the ClavicleLateral Medial Posterior Anterior Trapezius

  • Muscles that attach to the ClavicleLateral Medial Posterior Anterior Sternohyoid

  • Summary of Muscles that attach to ClavicleDeltoid

    Pectoralis Major

    Subclavius

    Sternohyoid

    Sternocleidomastoid

    Trapezius

  • Lateral Chest Wall

    DeltoidOriginLateral third of clavicle, acromion, and spine of scapulaInsertionDeltoid tuberosity on lateral shaft of humerusActionAnterior part: flexes and internally rotates arm; Middle part: abducts arm; Posterior part: extends and externally rotates armNerve SupplyAxillary nerve (C5 and C6)Blood SupplyDeltoid branch of thoracoacromial artery

  • Anterior Chest Wall

    Pectoralis MajorOriginClavicular head: anterior surface of medial half of clavicle; Sternocostal head: anterior surface manubrium & sternum, superior 6 costal cartilages, and aponeurosis of external oblique muscleInsertionLateral lip of bicipital groove of humerusActionClavicular head: flexes & adducts arm Sternal head: adducts & internally rotates arm Nerve SupplyLateral and medial pectoral nerves (C5, C6, C7, C8, and T1) Blood Supplypectoral branch of thoracoacromial trunk

  • Anterior Chest Wall

    SubclaviusOriginCostochondral junction 1st ribInsertionSubclavian groove inferior surface middle clavicleActionDepresses clavicleNerve SupplyNerve to subclavius C5, 6Blood SupplyClavicular branch of thoraco-acromial artery and suprascapular artery

  • Posterior Chest Wall

    TrapeziusOriginMedial third of superior nuchal line; external occipital protuberance, nuchal ligament, and spinous processes of thoracic vertebraeInsertionLateral third of clavicle, acromion, and spine of scapulaActionsuperior fibers elevate, middle fibers retract, and inferior fibers depress scapulaNerve SupplySpinal root of accessory nerve (CN XI) (motor) and cervical nerves (C3 and C4) (pain and proprioception)Blood SupplyTransverse cervical artery

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