Topic 1: Bones and Joints of the Shoulder Girdle

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12 Terms

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Joints

SternoClavicular

AcromioClavicular

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Sternoclavicular joint type?

Saddle, Redistricted ball and socket

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Articular Surfaces

Clavicle & Sternum

Incisura clavicularis.

Discus articularis (fibrocartilaginous disc)

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Articular capsule

Circularly strong, discus articularis fixed on its inner surface.

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Ligaments

Lig. interclaviculare

Lig. Sternoclaviculare

Lig. Costcoclaviculare

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Movements

Elevatio-depressio

protractio-retractio

rotatio-circumductio

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Acromioclaviculare type

Plane, Sliding and gliding

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Articular surfaces

Scapula, Clavicle

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Articular Capsule

Not very strong, often with a vestigial fibrous disc on the inner surface.

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Ligaments

Lig. Acromioclaviculare

Lig. Coracoclavicculare —> Lig. trapezoideum (anteriorly) , Lig. Conoideum (medially, posteriorly).

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Elevatio-depressio

Plane: Frontal

Axis: Saggital

Inhibition of elevation: lig. Costoclaviculare

Inhibition of depression: Clavicle hits the first rib

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Rotatio

Axis: around the clavicle, longitudinal.

30 degrees anteriorly & posteriorly, does not occur alone