Arthrology: Sternoclavicular joint Flashcards

1
Q

SC Joint type

A

Sellar/saddle

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2
Q

Morphology

A

Clavicle is convex superior-inferior
Clavicle is concave anterior-posterior

Manubrium is concave superior-inferior
Manubrium is convex anterior-posterior

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3
Q

Protraction arthrokinematics

A

anterior roll and glide of concave clavicle

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4
Q

Retraction arthrokinematics

A

posterior roll and glide of concave clavicle

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5
Q

Elevation arthrokinematics

A

superior roll and inferior glide of convex clavicle

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6
Q

Depression arthrokinematics

A

inferior roll and superior glide of convex clavicle

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7
Q

Innervation

A

Medial supraclavicular n.
Deep n. to subclavius

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8
Q

SC joint dislocation

A

Anterior or posterior
Very rare
Direct trauma or FOOSH
Clavicle fx more common
Posterior dislocation = risk of critical injury to neurovasculature

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