Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

PT602 > Shoulder Joint Complex GH JOINT > Flashcards

Shoulder Joint Complex GH JOINT Flashcards

(48 cards)

Start Studying
1
Q

Shoulder complex comprises of:

A 
humerus
scapula
clavicle
sternum
1st rib
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

how many joints?

A

3 physiologic

1 functional

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

3 physiologic joints

A

Glenohumeral Joint (GH)
Sternoclavicular (SC)
Arcrominoclavicular (AC)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

1 Functional joint

A 
Scapulothroacic joint
(no bony connections between the scapula and thorax)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

the complex is designed to

A

facilitate upper extremity mobility

NOT designed for stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Osteology of the shoulder complex

A 
humerus
scapula
clavicle
sternum
1st rib
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The most common sight of humeral fracture

A

surgical neck

inferior to greater and lesser tubercles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Glenohumeral Joint is

A

a synovial ball and socket joint

between the head of the humerus and the glenoid cavity of the scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Maintains ____ degrees of freedom

A

3! degress of freedom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

physiologic motions

A

flexion/extension
ABduction/ ADduction
internal (medial)/ external (lateral) rotation
Circumduction- (combo of motions NOT a degree of freedom)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

a wide range of movements provided at the cost of

A

skeletal stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

joint stability is provided by:

A

the rotator cuff muscles, long head of the biceps, related bony processes, and extra scapular ligaments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

articular surfaces ar:

A

glenoid fossa of the scapula

sperical humeral head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Glenoid fossa is:

A

long longitudinally
narrow transversely
shallow
covers only 1/3rd of the articular surface of the humeral head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

humeral head

A

large in size and spherical

longitudinal diameter is 2x greater than the fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

the glenoid cavity is deepened and expanded peripherally by:

A

a fibrocartilagenous collar: glenoid labrum that attaches to the margin of the fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

associated GH structures superficial to deep

A
  1. Coracohumeral ligament
  2. Joint Capsule (outer fibrous capsule, inner synovial membrane)
  3. glenohumeral ligaments
  4. tendon of the long head of the biceps
  5. glenoid labrum
  6. glenoid cavity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

5th rotator cuff muscle

A

long head of the biceps brachii

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

the joint capsule is:

A

tigher superiorly

looser inferiorly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

A looser inferior joint capsule:

Study These Flashcards
A

accomadates ABduction of the arm

21
Q

Bursae are:

Study These Flashcards
A

where the synovial membrane protrudes through apertures in the fibrous membrane
they lie between the tendons of surrounding muscles and the fibrous membranes

22
Q

most consistant bursae

Study These Flashcards
A

subtendinous bursa of subscapularis

23
Q

synovial structures do what?

Study These Flashcards
A

reduce friction between the tendons and adjacent joint capsule and bone

24
Q

Associated GH structures

Study These Flashcards
A
  1. Coracohumeral ligament
  2. Joint Capsule (outer fibrous capsule, inner synovial membrane)
  3. glenohumeral ligaments
  4. tendon of the long head of the biceps
  5. glenoid labrum
  6. glenoid cavity
25
I. Coracohumeral joint
thickening of the fibrous joint capsule attaching from the coracoid process to the greater tubercle maintaining the position of humeral head in fossa and limits superior translation of the humeral head
26
IIa. outer fibrous joint capsule
attaches to the margin of the glenoid cavity and anatomical neck of the humerus taught superiorly loose-fitting inferiourly static restraint that limits motion and stabilizes the joint
27
IIb. inner synovial membrane
secretes synovial fluid and serves to reduce frictional forces portion of the synovial membrane forms the synovial sheath that encloses the tendon of the long head of the biceps
28
(axillary pouch)
inferior redundant fold of the fibrous capsule and synovium | facilitates humeral elevation without stretching/tearing of the capsule
29
III. 3 glenohumeral ligaments
run from the glenoid rim to the anatomical neck of humerus 1. Superior GH 2. Middle GH 3. Inferior GH
30
1. Superior GH
provide stability anterosuperiorly
31
2. Middle GH
provides stability anteriorly but is often poorly developed or absent
32
3. Inferior GH
strongest and most important anterior & posterior bands plus the capsular pouch (inferior glenohumeral complex) provide stability anteriorly and inferiorly
33
Inferior glenohumeral complex works:
acts like a hammock to provide anterior & superior stability | ALWAYS taut in humeral abduction
34
the anterior band is the:
primary static restraint to anterior translation of the humeral head
35
IV. Tendon of the long head of the biceps
attaches to the supraglenoid tubercle of the glenoid fossa travels through the joint capsule through the intertubercular groove to meet with the short head of the biceps held in place by the transverse humeral ligament and by the tendon of the pec MAJOR
36
V. glenoid labrum
ring of fibrocartilage attaches to rim of fossa extends, deepeneds fossa improving stability
37
VI. Glenoid cavity
most deep structure
38
Coracromial Arch formed by:
osseoligamentous structure formed by: coracoid process acromion process coracromial ligament
39
Forms a:
bony-ligamentous roof-over the subacromial bursa and the tendon insertions of the supraspinatus & LH biceps
40
what does it do good/bad?
good: protects the subacromial structures from direct trauma from above bad: GH instability can lead to impingement of structures in the subacromial space
41
subacromial/subdeltoid bursa:
-between acromion process and deltoid & the humeral head and supraspinatus tendon -tendon insertions of supra and infra spinouts -tendon of LH of biceps
42
innervation to the GH
sensory innveration: supraspacular and axillary nerves
43
GH artthrokinematics
abduction/ adduction External/ internal rotation flexion/ extension
44
Shoulder ADduction
convex humeral head rolls superiorly and glides inferiorly on the concave glenoid fossa
45
Shoulder ABduction
convex humeral head rolls inferiorly and glides superiorly on glenoid fossa
46
External rotation
covex humeral head rolls posteriorly and glides anteriorly on the fossa
47
Internal rotation
convex humeral head rolls anteriorly and glides posteriorly on the fossa
48
Flexion and extension
sagittal plane involves the spin of the coves humeral head on the concave glenoid fossa

PT602 (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions