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a10. MSK (Anatomy: Upper limb) > 1.4.3. Glenohumeral Joint Capsule and Bursae > Flashcards

1.4.3. Glenohumeral Joint Capsule and Bursae Flashcards

1
Q

What is the Joint Capsule made up of?

A

It is a Fibrous Sheath

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2
Q

What is the function of the Joint Capsule?

A

To enclose the Structures of the Joint

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3
Q

Where does the Glenohumeral Joint Capsule extend between?

A

From - Anatomical Neck of the Humerus
To - Border of the Glenoid Fossa

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4
Q
  1. How is the Joint Capsule described?
  2. Why?
A
  1. Lax
  2. To permit greater mobility (particularly Abduction)
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5
Q

What lines the inner surface of the Joint Capsule?

A

The Synovial Membrane

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6
Q

What does the Synovial Membrane produce?

A

Synovial Fluid

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7
Q

What is the function of the Synovial Fluid?

A

To reduce friction between the 2 articulating surfaces

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8
Q

What is present to reduce friction in the Glenohumeral Joint?

A

Synovial Bursae

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9
Q

What is a Bursa?

A

A Sac filled with Synovial Fluid

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10
Q

What is the purpose of a Bursa?

A

To act as a Cushion between the Tendons and other Joint Structures

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11
Q

What are the 2 Clinically Important Bursae in the Glenohumeral Joint?

A
  1. Subacromial Bursa
  2. Subscapular Bursa
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12
Q

Where is the Subacromial Bursa found?

A
  1. Inferior to the Deltoid
  2. Inferior to the Acromion
  3. Superior to the Supraspinatus Tendon
  4. Superior to the Joint Capsule
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13
Q

What is the function of the Subacromial Bursa?

A

To support the Deltoid and Supraspinatus Muscles

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14
Q

What is the Clinical Significance of the Subacromial Bursa?

A

Inflammation can cause several shoulder problems

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15
Q

What is the Subscapular Bursa found between?

A
  1. The Subscapularis Tendon
  2. The Scapula
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16
Q

What is the function of the Subscapular Bursa?

A

To reduce “Wear and Tear” on the Tendon during movement of the shoulder

17
Q

Are the Subacromial and Subscapular Bursae the only ones present in the Glenohumeral Joint?

A

No, there are others present between the tendons of the muscles around the joint

18
Q

What common sporting injury damages the subacromial bursa?

A
  1. Subacromial Bursitis - a type of Rotator Cuff injury
  2. Dislocation

a10. MSK (Anatomy: Upper limb) (48 decks)

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