Quadrangular and triangular spaces Flashcards

1
Q

What are these?

A

Passageways between muscles of shoulder

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2
Q

Quadrangular space importance

A

Route for axillary nerve and posterior circumflex humeral artery

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3
Q

Quadrangular space borders

A

Superior: Teres minor
Lateral: Surgical neck of humerus
Inferior: Teres major
Medial: Long head triceps brachii

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4
Q

Triangular space importance

A

Circumflex scapular vessels enter infraspinous fossa

NO NERVES

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5
Q

Triangular space borders

A

Lateral: Long head triceps brachii
Superior: Teres minor
Inferior: Teres major

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6
Q

Triangular interval importance

A

Most inferior

Radial nerve and profunda brachii artery are visible in base as they wind around humerus in radial (spiral) groove

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7
Q

Triangular interval borders

A

Lateral: Humeral shaft/lateral head of tricep brachii
Medial: Long head of tricep brachii
Superior: Teres major

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8
Q

Bursae around shoulder

A

Subscapular

Subacromial

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9
Q

Subacromial bursa

A

Separates supraspinatus tendon from overlying coracoacromial ligament

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10
Q

Subscapular bursa

A

Between tendon of subscapularis and chest wall

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11
Q

Subacromial space importance

A

Between coracoacromial arch ligament and head of humerus

During abduction potential for impingement of soft tissues = inflammation and irritation

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12
Q

Contents subacromial space

A

Subacromial bursa
Supraspinatus tendon
Joint capsule
Long head of biceps

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