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Clinical Anatomy - Face/Neck/UE > Joints of UE > Flashcards

Joints of UE Flashcards

1
Q

Carpometacarpal Joint 1

A

1st metacarpal articulates with the trapezium

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2
Q

Carpometacarpal Joint 2

A

2nd metacarpal articulates with the trapezoid

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3
Q

Carpometacarpal Joint 3

A

3rd metacarpal articulates with the capitate

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4
Q

Carpometacarpal Joint 4

A

4th metacarpal articulates with the hamate

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5
Q

Carpometacarpal Joint 5

A

5th metacarpal articulates with the hamate

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6
Q

Joints of the Shoulder Girdle (4)

A

sternoclavicular
acromioclavicular
glenohumeral
scapulothoracic

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7
Q

Sternoclavicular (SC) Joint

A

articulation between sternal end of clavicle and manubrium

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8
Q

SC Joint - Capsule

A

fibrous capsule
reinforced anteriorly and posteriorly by anterior and posterior SC ligaments and superiorly by the interclavicular ligament
contains articular surfaces covered in fibrocartilage and separated by an articular disc for shock absorbtion

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9
Q

SC Joint - Ligaments (4)

A

anterior SC ligament
posterior SC ligament
interclavicular ligament
costoclavicular ligament

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10
Q

SC Joint - Type

A

synovial saddle joint

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11
Q

SC Joint - Movements

A

saddle joint but functions as ball and socket
elevation/depression (convex clavicle moves opposite on concave manubrium)
anterior/posterior ( concave clavicle moves same on convex manubrium)

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12
Q

SC Joint - Extras

A

only articulation connect appendicular skeleton UE to axial skeleton
most stable joint of pectoral girdle

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13
Q

Acromioclavicular (AC) Joint

A

articulation between acromial end of clavicle and acromion process of scapula

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14
Q

AC Joint - Capsule

A

relatively weak joint capsule
strengthened superiorly by fibers of trapezius
contains articular surfaces covered in fibrocartilage and separated by wedge-shaped disc

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15
Q

AC Joint - Ligaments (2)

A 
AC ligament
coracoclavicular ligament (conoid and trapezoid ligaments)
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16
Q

AC Joint - Type

A

plane synovial joint

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17
Q

AC Joint - Movements

A

acromion rotates on the acromial end of clavicle

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18
Q

Glenohumeral Joint

A

articulation between head of humerus and glenoid cavity of scapula

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19
Q

Glenohumeral Joint - Capsule

A

glenoid cavity deepened by labrum (fibrocartilage ring)
articular surfaces covered by hyaline cartilage
contains subacromial and subscapular bursae
reinforced by rotator cuff muscles (except inferior part which is weakest)
superiorly encloses biceps tendon
lax in adduction, taut in abduction

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20
Q

Glenohumeral Joint - Ligaments (4)

A

glenohumeral ligaments
coracohumeral ligament
transverse humeral ligament
coracoacromial ligament

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21
Q

Glenohumeral Joint - Type

A

ball and socket synovial joint

22
Q

Glenohumeral Joint - Movements

A

flexion/extension, abduction/adduction, medial and lateral rotation, circumduction

23
Q

Glenohumeral Joint - Extras

A

most instable joint of shoulder girdle

muscle control provides most stability

24
Q

Angle of Inclination - Glenohumeral Joint

A

130 - 150 degrees

25
Q

Angle of Torsion - Glenohumeral Joint

A

30 degrees (posterior torsion)

26
Q

Coracoacromial Arch

A

coracoid process + coracoacromial ligament + acromion

prevents superior dislocation of glenohumeral joint

27
Q

Scapulothoracic Joint

A

no bony articulation

scapulas location against thoracic wall

28
Q

Scapulohumeral Rhythm

A

after initial 30 degrees of elevation of humerus, scapula begins moving at a 2:1 ratio
for every 3 degrees of elevation, 2 degrees occur at glenohumeral joint and 1 degree at scapulothoracic joint

29
Q

Glenohumeral Ligaments (3)

A

internally to capsule
superior
inferior
middle

30
Q

Coracohumeral Ligament

A

limits lateral rotation
aids in passive support
fibers blend into joint capsule

31
Q

Subacromial Bursa

A

located between acromion, coracoacromial ligament, deltoid, supraspinatus tendon, and joint capsule (inferiorly)

32
Q

Subscapular Bursa

A

located between tendon of subscapularis and the neck of the scapula

33
Q

Rotator Cuff (4)

A 
supports glenohumeral joint
supraspinatus
infraspinatus
teres minor
subscapularis
34
Q

Elbow Joint

A

articulation between trochlea and capitulum of the humerus with the trochlear notch of the ulna and the head of the radius

35
Q

Humero-ulnar Articulation

A

trochlea of humerus with trochlear notch of ulna

36
Q

Humero-radial Articulation

A

capitulum of humerus (convex) with head of radius (concave)

37
Q

Elbow Joint - Capsule

A

weakest anteriorly and posteriorly

lateral and medial aspects supported by RCL, UCL, and annular ligament

38
Q

Elbow Joint - Ligaments (3)

A

radial collateral ligament
ulnar collateral ligament
annular ligament

39
Q

Elbow Joint - Type

A

hinge type synovial joint

40
Q

Elbow Joint - Movements

A

flexion and extension

41
Q

Elbow Joint - Extras

A

coronoid and radial fossas are deepened areas on humerus to allow for more movement

42
Q

Carrying Angle of Elbow Joint

A

the long axis of fully extended ulna makes an angle of ~170 degrees with the long axis of the humerus
carrying angle is the way the forearm angles away from the body
>15 degrees in females
10-15 degrees in males

43
Q

Proximal Radio-ulnar Joint

A

articulation of head of the radius on the ulna at the elbow joint

44
Q

Proximal Radio-ulnar Joint - Capsule

A

fibrous capsule encloses joint and is continuous with the capsule of the elbow joint

45
Q

Proximal Radio-ulnar Joint - Ligaments (1)

A

annular ligament

46
Q

Proximal Radio-ulnar Joint - Type

A

pivot type synovial joint

47
Q

Proximal Radio-ulnar Joint - Movements

A

rotation of head of radius in annular ligament during pronation/supination of forearm

48
Q

Distal Radio-ulnar Joint

A

articulation of head of ulna with the ulnar notch on the medial side of the distal end of the radius

49
Q

Distal Radio-ulnar Joint - Capsule

A

fibrous capsule encloses joint but deficient superiorly
L-shaped fibrocartilage articular disc binds the ends of the ulna and radius together and separates the cavity of the distal radio-ulnar joint from the cavity of the wrist joint

50
Q

Distal Radio-ulnar Joint - Ligaments

A

anterior and posterior ligaments strengthen capsule

51
Q

Distal Radio-ulnar Joint - Type

A

pivot type synovial joint

52
Q

Distal Radio-ulnar Joint - Movements

A

distal end of radius rotates around fixed head of ulna during pronation/supination

Clinical Anatomy - Face/Neck/UE (7 decks)

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