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Sports Medicine > Shoulder Anatomy > Flashcards

Shoulder Anatomy Flashcards

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1
Q

What kind of joint is the shoulder?

A

ball and socket

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2
Q

What are the 4 major bones of the shoulder?

A
  • Humerus
  • Scapula
  • Clavicle
  • Sternum
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3
Q

What is the top of the Humerus?

A

Head of humerus

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4
Q

Where is the bicipital groove?

A

in the middle of the top of the humerus

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5
Q

Where is the bicep tendon

A

bicipital groove

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6
Q

What are the two bumps on the head of the humerus?

A

Greater tuberosity

Lesser tuberosity

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7
Q

what is the dip that holds the humerus called?

A

glenoid cavity/ glenoid labrum

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8
Q

what does the glenoid labrum do?

A

increases the depth of the joint

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9
Q

What does the spine of the scapula do?

A

divides posterior scapula unequally

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10
Q

What is the acromion?

A

lateral tip of spine of scapula

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11
Q

what is the coracoid?

A

hooklike, rises anteriorly from scapula

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12
Q

clavicle

A

s- shaped bone

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13
Q

Where do fractures of the clavicle occur?

A

the middle 1/3

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14
Q

How many joints of the shoulder are there?

A

4

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15
Q

what are the 4 joints?

A
  • Sternoclavicular joint
  • Acromioclavicular joint
  • glenohumeral joint
  • scapulothoracic joint- not true joint
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16
Q

What does the sternoclavicular do?

A

allows clavicle to move up and down/ forward and backward

17
Q

What does the glenohumeral do?

A

shoulder flexion/ extension

18
Q

What does the scapulothoracic do?

A

critical to shoulder joint movement

19
Q

What is SITS?

A

S- supraspinatus
I- Infraspinatus
T- Teres Minor
S- subscapularis

20
Q

What are the functions of SITS

A

1) Supraspinatus- abduction
2) Infraspinatus- external rotation
3) Teres Minor- external rotation
4) Subscapularis- Internal rotation

21
Q

What does the supraspinatus do?

A

Abduction

22
Q

What does the infraspinatus do?

A

External rotation

23
Q

What does the teres minor do?

A

External rotation

24
Q

What does the subscapularis do?

A

Internal rotation

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