MSK Flashcards

1
Q

What portion of the anterior shoulder can look like a rotator cuff tendon tear and is where the biceps tendon leaves the groove?

A

rotator interval

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

what is the normal width at the AC joint under ultrasound?

A

6mm

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

what two structures are the ultrasound landmarks when evaluating the elbow for potential joint injection?

A

lateral epicondyle and trochlea of humerus

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

what structure is located between the lateral epicondyle and the humerus trochlea on the posterior elbow?

A

posterior fat pad

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

when injecting the elbow, what approach should be used?

A

transverse , in plane, insert needle over the lateral epicondyle

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

describe the location of the popliteus in relationship to the LCL?

A

deep to the LCL

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

what structure is found in the femoral groove above the lateral meniscus and under the LCL?

A

popliteus

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

on a wrist ultrasound, what structure is located between the extensor digitorum tendon and the joint?

A

dorsal radiocarpal ligament

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

an abscess greater than what size is unlikely to resolve with antibiotics only?

A

> 3cm

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

what is ultrasound posterior enhancement?

A

brighter appearance of tissue deep to an area of fluid due to increased ultrasound transmission

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

what type of artifact can be used to identify foreign body in soft tissue?

A

shadow

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

ultrasound of fluid filled round structures, such as cysts, can have what type of artifact at the edges?

A

linear shadowing

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

when scanning the proximal biceps tendon, what slight orientation of the probe should be used to avoid anisotropy?

A

slight cephalad tilt

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

hypoechoic clefts will be seen in the short axis view of what RTC tendon? why?

A

subscapularis - due to interdigitation of muscle (hypoechoic) with tendon (hyperechoic)

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

ultrasound of which RTC tendon will have a birds beak appearance in long axis view?

A

supraspinatus

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

the supraspinatus inserts onto what facet of the greater tuberosity?

A

superior facet

17
Q

why is articular cartilage anechoic on ultrasound?

A

water rich

18
Q

the impingement view for supraspinatus is more in what direction compared to the standard long axis view of the tendon insertion?

A

more lateral

19
Q

anechoic fluid collection anterior to the proximal biceps tendon can be indicative of what?

A

SASD bursitis

20
Q

in a case of calcific tendinopathy of the RTC tendons, there will be what artifact deep to areas of calcification?

A

shadowing

21
Q

if you see biceps tendon edema collection, what else is on the ddx?

A

glenohumeral joint effusion

22
Q

fluid both in the biceps tendon sheath and the bursa is 95% sensitive for what?

A

rotator cuff tendon tear

23
Q

t/f local CSI of the carpal tunnel delays the need for surgery at 1 year

A

true

24
Q

as you follow the median nerve down the forearm toward the wrist, the median nerve will have what trajectory before returning to midline at the carpal tunnel?

A

radial deviation

25
Q

what deep muscular structure of the forearm is a landmark for proximal median nerve scanning?

A

pronator quadratus

26
Q

the bony carpal tunnel exists between what two bony structures?

A

scaphoid and pisiform

27
Q

the flexor tendons have what directional relationship to the median nerve at the carpal tunnel?

A

deep to median nerve

28
Q

what tendon structure overlies the scaphoid at the carpal tunnel?

A

FCR

29
Q

what ultrasound artifact can you use to differentiate tendons from the median nerve?

A

aniostropy

30
Q

what is a normal cross sectional area of the median nerve at the carpal tunnel?

A

< 11mm squared

31
Q

what cross sectional area of the median nerve is considered severe carpal tunnel?

A

> 17mm squared

32
Q

in the proximal forearm, the median nerve is between what two muscle layers?

A

FDS / FDP

33
Q

which rotator cuff tendon has a wide footprint insertion?

A

subscapularis

34
Q
A