Unit 1: Lecture 10 Flashcards Preview

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

Flashcards in Unit 1: Lecture 10 Deck (27):
1

Bony components of the shoulder

- Clavicle
- Scapula

2

Proximal humerus joins shoulder girdle at...

glenoid fossa

3

Joints of the shoulder complex (4)

- Glenohumeral joint
- Sternoclavicular joint
- Acromioclavicular joint
- Scapulothoracic joint

4

Glenohumeral joint ligaments (6)

- Superior/Middle/Inferior glenohumeral ligaments
- Coracohumeral ligament
- Glenoid labrum (SLAP lesion)
- Articular capsule

5

Sternoclavicular joint ligaments/protection (6)

- Anterior/Posterior sternoclavicular ligament
- Anterior/Posterior interclavicular ligaments
- Articular capsule
- Articular disk

6

Acromioclavicular joint ligament (3)

- Acromioclavicular ligament (thickening of articular capsule)
- Coracoacromial ligament (forms supraspinatus tunnel)
- Coracoclavicular ligament

7

Acromioclavicular separation is more commonly referred to as a...

shoulder separation

8

Scapulohumeral rhythm

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

9

"Winged scapula?"

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

10

Rotator cuff muscles and attachments (4)

- Subscapularis - lesser tubercle
- Supraspinatus - greater tubercle (superior facet)
- Infraspinatus - greater tubercle (middle facet)
- Teres Minor - greater tubercle (inferior facet)

11

Motions muscles of rotator cuff help with:

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

12

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

Anteriorly; axillary fold

13

Pectoralis Major arises from...

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

14

Pectoralis major actions

G/H medial rotator and adductor

15

Pectoralis minor arises from...

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

16

Primary function of pectorals minor (and clinical aspect)

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

Subclavius connects...

first rib and clavicle

18

Subclavius primary function

stabilization of clavicle, but also depresses and protracts clavicle

19

Bursae

sac-like structures containing fluid

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

20

Example of bursa? (and 5 facts about it)

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

Supraspinatus tendinitis

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

Also would lead to "bursitis," or "shoulder pain"

22

Axilla superior markings (3)

- 1st rib
- scapula
- clavicle

23

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

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

Axillary fascia

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

25

Clavipectoral fascia

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

26

Structures that pierce the clavipectoral fascia (3)

- 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

Axillary sheath

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