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Gross Anatomy: Unit Two. > Joints and Spaces > Flashcards

Flashcards in Joints and Spaces Deck (52):
1

Quadrangular Space borders

Teres Major: Inferior
Teres Minor: Superior
Long Head of the Tricep: Medial
Humerus: lateral

2

Quadrangular Space contents

Posterior Circumflex Humeral artery and Axillary Nerve

3

Triangular Space Border

Teres Major: Inferior
Teres Minor Superior
Long Head of the Tricep: Lateral

4

Triangular space contents

circumflex scapular artery

5

Triceps Hiatus Border

long head Triceps Brachii, humerus, and teres major

6

Triceps Hiatus contents

Profunda brachii artery (Deep artery of the Arm) and Radial Nerve

7

Sternoclavicular Joint (SC)

between the clavicle and sternum
its a saddle type joint

8

Sternoclavicular Joint Compartments

Articular Discs: acts as a shock absorber at the sternal surface of the clavicle
Joint Capsule: ligaments that surrounds joint to reinforce

9

Ligaments for the Sternoclavicular joint

Anterior and Posterior Sternoclavicular ligament: reinforce the joint anteriorly and posteriorly

Interclavicular ligament: Strengths the sternoclavicular joint superiorly

10

Costoclavicular ligament

Runs from the inferior surface of the sterno-end of the clavicle to the 1st rib
Helps to limit elevation

11

Acromioclavicular Joint (AC)

synoival plane joint
Between the Acromion of the Scapula and the Clavicle

12

Ligaments of the Acromioclavicular Joint

Acromioclavicular Ligament: from acromion to clavicle and helps to strengthen the joint superiorly

Coracoclavicular ligament: anchors the coracoid process of the scapular to the clavicle

13

The two parts of the Coracoclavicular Ligament

Conoid ligament: from the coracoid ligament to the inferior conoid tubercle of the clavicle

Trapeziod ligament: superior to the coracoid process to the trapezoid line of the clavicle

14

Axilla space

-Pyramidal space with a apex, base and four walls
-helps to provide passageway for vessels and nerves going to and from the upper limb
-almost disappears when the shoulder joint is fully abducted

15

Apex of Axilla

Cervico-axillary canal (passageway between neck and Axilla)

Bounded by the 1st rib, clavicle, superior edge of scapula

16

Base of the Axilla

Formed by concave skin, subcutaneous tissue, axillary fascia

17

Anterior border of the Axilla

Pectoralis major and minor

The anterior axillary fold is the most inferior part of this border

18

Posterior border of the Axilla

Scapula, subscapularis, teres major, and latissimus Dorsi

The posterior axillary fold is the most inferior part

19

Medial border of the Axilla

Thoracic wall and serrated anterior

20

Lateral border

Narrow bony way formed by the tubertubercle sucus of the humerus

21

What does the Axilla contain?

Axillary artery and it's branches, axillary vein, lymphatic vessels, and branches of the brachial plexus

22

Coraco-acromial arch

coracoid process+ coraco-acromial ligament +acromion

important in shoulder joint, and helps prevent superior displacement

23

Glenohumeral joint type

shoulder joint
ball and socket

24

Glenohumeral joint capsule

Fibrous capsule and synovial membrane
The Glenohumeral ligament (different types) strengthenes this capsule

25

Glenohumeral labrum

ring-like, fibrocartilaginous that deepens the cavity

Along the posterior aspect

26

Glenohumeral ligament type: Transerve humeral ligament

Run from the greater and lesser tubercle, forms a type of bridge over it

(as a canal for the tendon for the long head of biceps branchii and its synovial membrane

27

Glenohumeral ligament type: Coracohumeral ligament

Coracoid to the greater tubercle
helps to strengthen the joint superiorly

28

Bursa: Subacromial

Between the acromoin and coraco-acromion ligament

(helps movement of the supraspinatus tendon under the arch)

29

Bursa: Subscapular

between the tendon of the subscapularis and the neck of the scapula

(Protects the tendon where it passes inferior to the root of the coracoid proces and covers the neck of the scapula)

30

blood supply and innervation to the glenohumeral joint

anterior and posterior circumflex humeral arteries and branches of the suprascapular artery

the suprascapular, axillary and lateral pectoral nerves supply the joint

31

cubital fossa: what is it

shallow triangular depression on the anterior surface of the elbow

32

cubital fossa borders

-superiorly is a line between the medial and lateral epicondyle
-medially is pronator teres
-laterally is brachioradialis

33

cubital fossa floor and roof

floor: branchialis and supinator muscles
roof: fasica, skins, bicipital apnoreurosis, median cubital vein

34

contents of the cubital fossa

medial nerve
radial nerve
biceps brachii tendon
the terminal part of the brachial artery

35

functions of the elbow

eating,drinking, combing hair, brushing teeth, talking on the phone...etc

36

carry angle for men and women

men: 5-10 degrees
women: 10-15

these angles are in normal position and carrying a bag

37

the three articulations on the elbow joint, that occur within the joint capsule

flexion and extension, unilateral hinge joint:
humeroulna joint
humeroradial joint

gives supination and pronation, pivot joint:
proximal radioulnar joint

38

differences in ulna and radius in supination and pronation

in supination they are parrellel and in pronation the radius crosses the ulna

39

collateral ligaments of the elbow

strong fibrous thickening of joint capsule
two different types:
-radial collateral ligament
-ulnar collateral ligament

40

Radial collateral ligament elbow

-elbow
-lateral epicondyle and blends into annular ligament
-stablizes the joint against varus stress (adduction)

41

Ulnar collateral ligament elbow

-elbow
-medial epicondyle to coronoid process and olecranon of ulna with three bands
-anterior, posterior, oblique
-stabilizes the joint against valgus stress (abduction)

42

Anterior band ulnar collateral ligament elbow

tight band in extension
(loose in flexion, which could then limit extension)

43

posterior band ulnar collateral ligament elbow

tight in flexion (loose in extension)

44

oblique band ulnar collateral ligament elbow

deepen the trochlear notch to help the trochlea sit better in the fossa

45

Annular ligament elbow

-elbow
-encircles head of radius in the radial notch of the ulna and serves as an articular srface
-almost covers the entire head of the radius

46

oblique cord elbow

-holds radius and ulna together
- damage can cause a loose pronation and supination

47

interosseous membrane

-elbow
-prevetns proximal displacement of radius on ulna (inbetweeen the two bones)

48

Epicondyles and olecranon relation to each other in flexion

they form a triangle

49

Epicondyles and olecranon relation to each other in extension

they are all aligned during extension

50

olecranon bursa

fluid-filled sac that allows tendon to move over the bone

51

supracondylar fracture

-above the condyles
-common in children and older people

52

nursemaid elbow

can dislocate the radial head from the angular ligament