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ESA 2 > MSK - Scapula > Flashcards

MSK - Scapula Flashcards

Images reproduced, with permission, from teachmeanatomy.info

1
Q

What bones does the Scapula articulate with and what are the names of the joints?

A

Articulates with the humerus at the glenohumeral joint, and with the clavicle at the acromioclavicular joint

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2
Q

What surface of the Scapula is this?

A

Costal Surface

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3
Q

What is the landmark shaded in blue?

What muscle originates from this landmark?

A

Subscapular Fossa

The Subscapularis (one of the rotator cuff muscles)

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4
Q

What is the landmark shaded in red?

Two muscles attach and another originates to this landmark, what are they?

A

Coracoid Process

Short head of the biceps brachii and the pectoralis minor attach here

Corocobrachialis muscle originates from here

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5
Q

What is the landmark shaded in green?

A

Acromion

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6
Q

What surface of the Scapula is this?

A

Lateral Surface

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7
Q

What is the landmark shaded in yellow?

What bone articulates here and what is the name of the joint?

A

Glenoid Fossa

The head of the humerus articulates here

The Glenohumeral joint

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8
Q

What bony landmarks are immediately above and below the yellow shaded landmark?

What muscles attach here?

A

Above = Supraglenoid Tubercle

Below = Infraglenoid Tubercle

The Supraglenoid Tubercle is the site of attachment for the long head of the biceps brachii

The Infraglenoid Tubercle is the site of attachement for the long head of the triceps brachii

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9
Q

What surface of the Scapula is this?

A

Posterior Surface

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10
Q

What is dividing the orange and purple shaded landmarks?

A

The Spine

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11
Q

What is the purple shaded region?

What muscle originates from this region?

A

The Supraspinous Fossa

The Supraspinatus muscle

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12
Q

What is the orange shaded region?

What muscle originates from this region?

A

The Infraspinous Fossa

The Infraspinatus

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13
Q

What is the green shaded landmark?

What does it artciulate with?

A

The Acromion

Articulates with the clavicle

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14
Q

How common are Scapula fractures?

A

Uncommon

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15
Q

What is a fracture of the Scapula an indication of?

A

Severe Chest Trauma

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16
Q

When are fractures of the scapula most frequently seen?

A

High speed road collisions, crushing injuries, or sports injuries.

17
Q

Why does a fractured scapula not require much intervention?

A

The tone of the surrounding muscles will hold the pieces together for healing to occur

18
Q

What is this called?

A

Winged Scapula

19
Q

What muscle attaches to the costal face of the scapula and pulls it against the ribcage?

What nerve innervates it?

A

The Serratus Anterior

Innervated by the Long Thoracic nerve

20
Q

How does this condition occur?

A

Damage to the long thoracic nerve, which can be damaged by trauma to the shoulder, repetitive shoulder movement or inflamed structures pressing on the nerve

ESA 2 (33 decks)

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