MRI Knee, Shoulder, Foot And Ankle

Question 1

Essential for examining menisci
Position?

Answer 1

Sagittal T1W
Externally rotated (5-10degrees)

Question 2

Sequence to examine the cruciate ligaments and cartilage

Answer 2

T2 FSE and T2 GRASS

Question 3

Used for confirming meniscal tear

Answer 3

Coronal images

Question 4

Used for patellofemoral cartilage

Answer 4

Axial images

Question 5

Normal menisci
T1
T2

Answer 5

Both low signal

Question 6

Normal meniscus
Width
Thickness

Answer 6

9-12mm
4-5mm

Question 7

Discoid meniscus

Answer 7

> 2 consecutive sagittal images that show bow tie appearance

Question 8

Lateral meniscus often has what appears to be a tear on the anterior horn near its upper margin

Answer 8

Transverse ligament

Question 9

Important for diagnosing ACL tear

Answer 9

T2WI

Question 10

Normally seen in intercondylar notch as a linear, predominantly low signal structure on T1

Answer 10

Anterior Cruciate Ligament

Question 11

Gently curved, homogenously low signal structure that is INfrequently torn

Answer 11

Posterior cruciate ligament

Question 12

Normal PCL

Answer 12

<6mm

Question 13

Low signal, round structure often seen anterior or posterior to PCL seen in sagittal views

Answer 13

Meniscofemoral ligament

Question 14

Meniscofemoral ligament
In front of PCL
Behind PCL

Answer 14

Ligament of Humphry
Ligament of Wrisberg

Question 15

Signal intensity of medial collateral ligament on
T1
T2

Answer 15

Both low signal

Question 16

Injuries to medial collateral ligament

Answer 16

Valgus stress to lateral part of the knee

Question 17

Lateral collateral ligament
Most posterior structure
Anterior to the biceps

Answer 17

Tendon of biceps femoris
Fibular collateral ligament

Question 18

Insert onto the anteromedial aspect of tibia

Answer 18

Sartorius, gracilis and semitendinosus
-pes anserinus

Question 19

Rotator cuff muscles

Answer 19

Supraspinatus
Infraspinatus
Teres minor
Subscapularis

Question 20

Inserts onto greater tuberosity of humerus, superior to scapular, inferior to acromioclavicular jt

Answer 20

Supraspinatus

Question 21

2-3 cm proximal to supraspinatus insertion

Answer 21

Critical zone (decreased vascularity)

Question 22

Fibrocartilaginous ring that surrounds periphery of bony glenoid of the scapula

Answer 22

Glenoid labrum

Question 23

Primary sequence for imaging rotator cuff

Answer 23

Fat suppresed fast spin echo T2 weighted oblique coronal

Question 24

Most commonly seen cuff tear on MRI

Answer 24

Rim rent (anteriorly at insertion of supraspinatus)

Question 25

Normal humeral head should be ____ on superior slices

Answer 25

Round

Question 26

The glenoid labrum is best imaged on

Answer 26

Axial T2 or T2*

Question 27

Normal labrum is _____ shaped and ____ signal

Answer 27

Triangular; low

Question 28

Anterior vs posterior labrum

Answer 28

Anterior is larger

Question 29

Normal variants in labrum that mimic torn/detached labrum

Answer 29

Sublabral foramen Buford complex

Question 30

Opening beneath anterosuperior labrum

Answer 30

Sublabral foramen

Question 31

Absent anterosuperior labrum

Answer 31

Buford complex

Question 32

Sublabral recess is seen only in ____ part of superior labrum

Answer 32

Anterior (thin and extends medially)

Question 33

Long head of the biceps tendon runs in the ____

Answer 33

Bicipital groove

Question 34

Made up of branches from C4, C5 and C6 roots of brachial plexus

Answer 34

Suprascapular nerve

Question 35

Innervates supraspinatus

Answer 35

Suprascapular nerve

Question 36

Teres minor has fatty atrophy

Answer 36

Quadrilateral space syndrome

Question 37

Infraspinatus with fatty infiltration

Answer 37

Suprascapular nerve entrapment

Question 38

Flexor tendons

Answer 38

Posteriorly in ankle

Question 39

Extensor tendons

Answer 39

Anteriorly

Question 40

Ankle tendon rupture seen best on

Answer 40

Axial images

Question 41

Achilles tendon is best seen on

Answer 41

Sagittal image

Question 42

Posterior tibial tendon

Answer 42

Tom - posterior tibial tendon Dick - flexor digitorum longus Harry - flexor hallucis longus

Question 43

Flexor- Extensor-

Answer 43

Posterior Anterior

Question 44

Most medial and largest

Answer 44

Posterior tibial tendon

Question 45

Insertion of posterior tibial

Answer 45

Navicular, 2nd and 3rd cuneiform and bases of 2nd to 4th metatarsals

Question 46

Runs deep to posterior tibialis, supports the talusband arch in PTT tears

Answer 46

Spring ligament

Question 47

Only tendon at the distal level that has muscle still atached

Answer 47

Flexor hallucis longus tendon

Question 48

Achilles tendon of the foot

Answer 48

Flexor hallucis longus tendon

Question 49

Insertion of peroneus brevis

Answer 49

Base of 5th metatarsal

Question 50

Insertion of peroneus longus

Answer 50

Base of 1st metatarsal

Question 51

Strong fibrous band that extends across medial ankle joint for approximately ____ cm

Answer 51

Flexor retinaculum; 5-7cm

Question 52

Most common accessory muscle encountered around the foot and ankle

Answer 52

Accessory soleus and peroneus brevis

Question 53

Lies medially as a broad band beneath tendons

Answer 53

Deltoid ligament

Question 54

Most commonly torn ankle ligament

Answer 54

Anterior talofibular ligament

Question 55

Cone shaped space between talus and calcaneus

Answer 55

Sinus tarsi

Question 56

Space between tibia and fibula

Answer 56

Lateral gutter