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OCT 720 > Chapter 3C (Joints of the Pectoral and Scapular Regions) > Flashcards

Chapter 3C (Joints of the Pectoral and Scapular Regions) Flashcards

1
Q

The sternoclavicular (SC) joint is a ___ type synovial join, but functions as a ___ ____ ____ joint.

A

Saddle; ball and socket

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2
Q

Ligaments of the SC joint

A
  • Anterior and posterior sternoclavicular ligament
  • Interclavicular ligament
  • Costoclavicular ligament
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3
Q

Movements of the SC joint

A
  • Protraction
  • Retraction
  • Elevation
  • Depression
  • Rotation
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4
Q

The acromioclavicular (AC) joint is a _____ type of synovial joint.

A

Plane

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5
Q

Ligaments of the AC joint

A
  • Acromioclavicular ligament
  • Coracoclavicular ligament
    • Conoid ligament
    • Trapezoid ligament
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6
Q

Movements of the AC joint

A
  • Protraction
  • Retraction
  • Rotation
  • Elevation
  • Depression
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7
Q

The glenohumeral (GH) joint is ____ ____ ____ to the AC joint.

A

Almost directly inferior

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8
Q

Ligaments of the GH joint

A
  • Glenohumeral ligaments (Superior, middle, inferior)
  • Coracohumeral ligament
  • Transverse humeral
  • Coracoacromial ligament
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9
Q

Movements of the GH joint

A
  • Flexion-extension
  • Abduction-adduction
  • Rotation (medial/lateral)
  • Circumduction
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10
Q

(GH Joint)

____ ____ ____ that is lax and at risk for dislocation.

A

Loose fibrous capsule

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11
Q

(GH Joint)
_____ _____ lines the internal surface of the fibrous layer. Forms a sheath for the tendon of the long head of the biceps brachii.

A

Synovial membrane

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12
Q

(GH Joint)

Bursae in location …

A

Aid in mobility.

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13
Q

(GH Joint Bursae)

Contain synovial fluid to provide …

A

Cushion between bones and tendons around the joint.

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14
Q

(GH Joint)

Blood supply

A
  • Anterior and posterior circumflex humeral arteries

- Branches of the suprascapular artery

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15
Q

(GH Joint)

Innervation

A
  • Suprascapular nerve
  • Axillary nerve
  • Lateral pectoral nerve
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16
Q

The dislocation of the AC joint is commonly known as

A

Shoulder separation

17
Q

(Dislocation of AC Joint)

When the coracoclavicular ligament tears, the shoulder …

A

Separates from the clavicle and falls due to the weight of the UE.

18
Q

(Dislocation of AC Joint)

Acromion can pass inferior to the acromial end of the clavicle, …

A

… making the acromion appear more prominent and the clavicle may move superiorly.

19
Q

Why is the GH joint commonly dislocated?

A

Commonly dislocated by direct/indirect injury because of its freedom of movement and instability.

20
Q

(Dislocations of GH joint)
Most dislocations of the humeral head occur ______ because of the strong support superiorly by the coraco-acromial arch and support of the rotator cuff.

A

Inferiorly

21
Q

(Dislocations of GH joint)

Anterior dislocations occur most often in young adults and athletes, caused by …, driving the humerus inferiorly.

A

…excessive extension and lateral rotation of the humerus

22
Q

(Dislocations of GH joint)
Inferior dislocations occur after an…. The axillary nerve may be injured due to its relation to the inferior part of the joint capsule.

A

…avulsion fracture of the greater tubercle of the humerus.

23
Q

What is a subluxation of GH joint?

A

A partial dislocation of the GH joint

24
Q

The GH joint relies on the integrity of ____, ____ ____, and _____ _____ for stability.

A

Muscular, joint capsule, and ligamentous structures

25
Q

_____________ around the joint may lead to GH subluxation.

A

Injury or paralysis of muscles

26
Q

(Subluxation of GH Joint)

frequent complication for individuals with _____

A

Post-stroke hemiplegia

27
Q

Adhesive capsulitis of GH joint is also known as

A

Frozen shoulder

28
Q

(Adhesive capuslitis)

Caused by ____ ____ and _____ between the inflamed joint capsule of the GH joint.

A

Adhesive fibrosis and scarring

29
Q

(Adhesive capsulitis)

__________, limiting abduction of the arm to 45º with the aid of elevation and rotation of the scapula.

A

Movement is restricted and painful

30
Q

Injuries that may cause frozen shoulder

A
  • GH dislocations
  • Calcific supraspinatus tendinitis
  • Partial tearing of the rotator cuff, and bicipital tendinitis

OCT 720 (73 decks)

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