Joints of Shoulder Region Flashcards

1
Q

The GH joint has approximately a _____ degree angle of clination.

A

135

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2
Q

The articular surfaces of the humerus is __x larger than the area offered by the glenoid cavity.

A

3

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3
Q

What is the radius of the humeral head?

A

30mm

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4
Q

What is the labrum made up of?

A

fibrocartilage

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5
Q

What is the articular surface of the GH joint covered by?

A

hyaline cartilage

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6
Q

How many intrinsic ligaments of the GH joint are there?

A

3

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7
Q

What are the names of the intrinsic ligaments of the GH joint?

A

superior, middle and inferior band

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8
Q

In _____ percent of the population the synovial membrane becomes continuous with the underlying bursae, which may lead to issues with inflammation.

A

30

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9
Q

What is the main target of OA at the GH joint?

A

hyaline cartilage

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10
Q

The LH of biceps is ____capsular and ____synovial.

A

intra;extra

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11
Q

What is the test for bicipital tenosynovitis?

A

supination with arm at 90 degrees

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12
Q

There is no pure adduction at the GH joint (T/F)

A

True

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13
Q

Does medial or lateral rotation have more movement?

A

medial

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14
Q

What controls extension of the GH joint?

A

coracohumeral lig

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15
Q

What ligaments resist abduction of the GH joint?

A

GH ligaments

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16
Q

Does medial or lateral rotation stretch the GH ligaments more?

A

lateral

17
Q

What type of joint is the AC joint?

A

synovial planar

18
Q

How do the coraco-clavicular ligaments support AC joint?

A

By supporting clavicle

19
Q

The coracoacromial ligaments does not provide support to the AC joint (T/F)

A

TRUE

20
Q

What is the range of elevation and depression of the clavicle?

A

10cm;3 cm

21
Q

What is the range of protraction and retraction of the clavicle?

A

10cm;3cm

22
Q

What is the range of rotation of the clavicle?

A

30 degrees

23
Q

What type of joint is the SC joint?

A

synovial saddle

24
Q

What are the 3 intrinsic SC ligaments?

A

anterior, posterior and superior

25
Q

The ________ ligament runs between the first rib and the clavicle.

A

costoclavicular

26
Q

What is the intraarticular disc of the SC joint made up of?

A

fibrocartilage

27
Q

When is axial rotation of the clavicle necessary?

A

when abducting past 90 degrees

28
Q

What muscle assists in axial rotation of the clavicle?

A

subcalvius

29
Q

What is the only synovial joint connecting the upper limb to torso?

A

SC joint

30
Q

Where does the superior angle of the scapula sit?

A

2nd rib

31
Q

where does the inferior angle of the scapula sit?

A

7th rib

32
Q

What is the av. range of protraction and retraction at scapula?

A

15cm

33
Q

What is the av. range of depression and elevation of the scapula ?

A

10-12cm

34
Q

What is the av. range of rotation of the scapula?

A

60 degrees

35
Q

There is a ratio of __:__ for moments of abduction and rotation at the scapula, which is known as _________ rhythm.

A

2:1; scapulothoracic