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OT 716 - Unit I > Unit 1: Lecture 10 > Flashcards

Unit 1: Lecture 10 Flashcards

1
Q

Bony components of the shoulder

A
  • Clavicle

- Scapula

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2
Q

Proximal humerus joins shoulder girdle at…

A

glenoid fossa

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3
Q

Joints of the shoulder complex (4)

A
  • Glenohumeral joint
  • Sternoclavicular joint
  • Acromioclavicular joint
  • Scapulothoracic joint
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4
Q

Glenohumeral joint ligaments (6)

A
  • Superior/Middle/Inferior glenohumeral ligaments
  • Coracohumeral ligament
  • Glenoid labrum (SLAP lesion)
  • Articular capsule
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5
Q

Sternoclavicular joint ligaments/protection (6)

A
  • Anterior/Posterior sternoclavicular ligament
  • Anterior/Posterior interclavicular ligaments
  • Articular capsule
  • Articular disk
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6
Q

Acromioclavicular joint ligament (3)

A
  • Acromioclavicular ligament (thickening of articular capsule)
  • Coracoacromial ligament (forms supraspinatus tunnel)
  • Coracoclavicular ligament
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7
Q

Acromioclavicular separation is more commonly referred to as a…

A

shoulder separation

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8
Q

Scapulohumeral rhythm

A

2/3::1/3 abduction movement for glenohumeral joint movement compared to scapulothoracic joint movement

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9
Q

“Winged scapula?”

A

Potential damage to long thoracic nerve, which innervates the serratus anterior, which helps in affixing the scapula to the thoracic wall

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10
Q

Rotator cuff muscles and attachments (4)

A
  • Subscapularis - lesser tubercle
  • Supraspinatus - greater tubercle (superior facet)
  • Infraspinatus - greater tubercle (middle facet)
  • Teres Minor - greater tubercle (inferior facet)
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11
Q

Motions muscles of rotator cuff help with:

A

Medial rotation: subscapularis
Lateral rotation: infraspinatus and teres minor
Initiates abduction: supraspinatus

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12
Q

Pectoralis major is a large muscle which covers the upper chest _________ and contributes to the anterior ____________

A

Anteriorly; axillary fold

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13
Q

Pectoralis Major arises from…

A

side of sternum, shaft of clavicle, and cartilages of first 7 ribs, with fibers attaching to LATERAL lip of intertubercular groove of humerus

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14
Q

Pectoralis major actions

A

G/H medial rotator and adductor

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15
Q

Pectoralis minor arises from…

A

3rd, 4th, and 5th ribs to coracoid process of scapula.

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16
Q

Primary function of pectorals minor (and clinical aspect)

A

stabilization of shoulder girdle, but also assists lower trapezius

crutch walkers may use the pec minor as they lift the trunk against a stationary shoulder girdle base during ambulation

17
Q

Subclavius connects…

A

first rib and clavicle

18
Q

Subclavius primary function

A

stabilization of clavicle, but also depresses and protracts clavicle

19
Q

Bursae

A

sac-like structures containing fluid

found at points of friction (where a tendon inserts into bone)

20
Q

Example of bursa? (and 5 facts about it)

A

Subacromial bursa/subdeltoid bursa

  • size of half dollar
  • located deep to deltoid
  • overlying tendon of supraspinatus and joint capsule
  • has an extension which courses beneath the acromion and coracoacromial ligament

The subacromial/subdeltoid bursa facilitates movement of the deltoid over the joint capsule and supraspinatus tendon

21
Q

Supraspinatus tendinitis

A

Subacromial/subdeltoid bursa may become irritated and ultimately fuse to supraspinatus tendon and joint capsule.

Also would lead to “bursitis,” or “shoulder pain”

22
Q

Axilla superior markings (3)

A
  • 1st rib
  • scapula
  • clavicle
23
Q

Axilla boundaries (base, anterior, posterior, medial, lateral, and apex)

A

Base - armpit (formed and supported by axillary fascia)
Anterior - anterior axillary fold (pec major)
Posterior - poster axillary fold (lat. dorsi and teres major)
Medial - serratus anterior
Lateral - floor of intertubercular groove of humerus
Apex - triangle formed by 1st rib, scapula, and clavicle

24
Q

Axillary fascia

A

from latissimus dorsi to the pectorals major and makes hollow of armpit

25
Q

Clavipectoral fascia

A

investing layer of the subclavius and pectorals minor and covers the anterior aspect of the axilla

26
Q

Structures that pierce the clavipectoral fascia (3)

A
  • cephalic vein: drains upper limb and terminating in the axillary vein
  • thoracoacromial vessels: supplies vascular branches to the anterior chest wall
  • lateral pectoral nerve: supplies pectoralis major
27
Q

Axillary sheath

A

adherent to the clavipectoral fascia behind the pec mini, and encloses vessels and nerves of axilla (except the axillary vein which is OUTSIDE sheath)

The axillary sheath is a fascial extension of the pre-vertebral layer of cervical fascia covering the scalene muscles

OT 716 - Unit I (23 decks)

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