Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

OITE > Shoulder > Flashcards

Shoulder Flashcards

1
Q

What is the primary restraint to inferior translation of the shoulder at 0° degrees of abduction (neutral rotation)?

A

SGHL

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

What is the relationship/function of the SGHL with the long head of the biceps tendon?

A

prevents anteroinferior translation of long head of biceps (biceps pulley)

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

What is the function of the MGHL?

A

resist anterior and posterior translation in the midrange of abduction (~45°) in ER of the shoulder

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

In the shoulder, what is the primary restraint to anterior/inferior translation 90° abduction and maximum ER (late cocking phase of throwing)

A

anterior band IGHL

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

What is the function of the anterior band of IGHL?

A

primary restraint to anterior/inferior translation 90° abduction and maximum ER (late cocking phase of throwing)

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

What is the most important static stabilizer about the shoulder joint?

A

superior band IGHL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the function of the superior band IGHL?

A

the most important static stabilizer about the shoulder joint

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

What is the composition of the glenoid labrum?

A

fibrocartilagineous tissue

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

What is a Buford complex?

A

A normal variant of the shoulder labrum; there is absence of the anterosuperior labrum with a cord-like MGHL that attaches to the long head of the biceps tendon

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

What happens if a Buford complex is attached?

A

Painful and limited ER and elevation

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

What is the approximate retroversion of the humeral head?

A

20 degrees

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

What is the average version of the glenoid?

A

average version is 5° of retroversion in relation to the axis of the scapular body and varies from 7° of retroversion to 10° of anteversion

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

What are the muscle attachments to the coracoid?

A

coracobrachialis, pectoralis minor, and short head of the biceps attach to the coracoid

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

What is the average acromiohumeral interval?

A

acromiohumeral interval is 7-8mm

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

What provides the blood supply to the humeral head?

A

The ascending branch of the anterior humeral circumflex artery and the posterior humeral circumflex artery (most current literature supports this as the main blood supply to the humeral head)

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

The rotator cuff experiences the greatest stress at which phase of throwing?

A

deceleration phase; eccentrically slowing the arm

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

Hornblower’s sign is indicative of what?

A

Teres minor injury; Walch et al found that hornblower’s sign had 100% sensitivity and 93% specificity for irreparable degeneration of teres minor.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Anterior shoulder dislocations in patients older than 40 years may result in rotator cuff tears; what is the most commonly affected rotator cuff tendon?

A

Supraspinatus

19
Q

What patient is the optimal candidate for a latissimus dorsi transfer?

A

young laborer with massive posterior/superior RCT, atrophy and fatty infiltration

20
Q

What nerve is most at risk during pectoralis major tendon transfer?

A

Musculocutaneous

21
Q

What nerve is most at risk during latissimus dorsi tendon transfer?

A

Radial nerve

22
Q

What is the most common finding during arthroscopic surgery for traumatic anterior shoulder instability?

A

anteroinferior labral tear; anteroinferior labral tear is the most common tear in traumatic anterior shoulder instability

23
Q

What is the blood supply to the serratus anterior?

A

Long thoracic artery (superiorly); thoracodorsal artery (inferiorly)

24
Q

What is the innervation of the trapezius?

A

Spinal accessory nerve (cranial nerve XI)

25
Q

What is the innervation of the rhomboid muscles?

A

Dorsal scapular nerve

26
Q

What are the contents of the quadrilateral space?

A

axillary nerve (C5) and posterior humeral circumflex artery

27
Q

What is the innervation of teres minor?

A

axillary nerve

28
Q

Suprascapular notch entrapment of the suprascapular nerve causes weakness in what muscle(s)?

A

supraspinatus and infraspinatus

29
Q

Spinoglenoid notch entrapment of the suprascapular nerve causes weakness in what muscle(s)?

A

infraspinatus ONLY

30
Q

What genetic mutation is associated with Parsonage-Turner syndrome?

A

gene septin 9 on chromosome 17q24

31
Q

What are the soft tissue adaptations to glenohumeral internal rotation deficit (GIRD)?

A

increased sulcus sign, humeral head and glenoid retroversion, SLAP tears and articular sided partial RCTs; will see increased shoulder ER and a deficit in IR

32
Q

What are the properties of C. acnes?

A

gram positive, facultative, aerotolerant, anaerobic rod that ferments lactose to propionic acid

33
Q

What nerve roots supply the long thoracic nerve?

A

C5, C6, C7

34
Q

The long thoracic nerve supplies which muscle?

A

Serratus anterior

35
Q

Injury to the serratus anterior or long thoracic nerve causes what type of scapular winging?

A

Inferomedial scapular winging (the inferior and medial border to wing out as the serratus is not able to hold it lateral/anterior)

36
Q

What is the innervation of the rhomboids?

A

Dorsal scapular nerve

37
Q

The latissimus dorsi muscle is innervated by what nerve?

A

thoracodorsal nerve

38
Q

What nerve innervates teres major?

A

lower subscapular nerve

39
Q

Which nerve roots supply the dorsal scapular nerve?

A

C4 and C5 (mostly C5)

40
Q

What nerve roots supply the thoracodorsal nerve?

A

C6-C8

41
Q

Which nerve roots supply the suprascapular nerve?

A

C5 and C6

42
Q

What are the anatomic boundaries of the rotator interval?

A

Superior: anterior border of the Supraspinatus tendon
Inferior: the superior border of the subscapularis
Medial: coracoid
Lateral: transverse humeral ligament

43
Q

What are the contents within the rotator interval?

A

Long head of the biceps tendon; superior Glenohumeral ligament; coracohumeral ligaments

44
Q

Which nerve could be injured during a latissimus dorsi transfer due to its proximity?

A

Radial nerve; it runs immediately deep (anterior) to LD tendon 3 cm medial to its insertion on the humerus

OITE (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions