B6-073 Joint Injury

Question 1

fibers run posterior lateral

Answer 1

ACL

Question 2

fibers run anterior medial

Answer 2

PCL

Question 3

prevents anterior translocation of the tibia and provides rotational stability

Answer 3

ACL

Question 4

prevents posterior translocation of the tibia and helps provide varus/valgus stability

Answer 4

PCL

Question 5

restrains valgus stress

Answer 5

MCL

Question 6

restrains varus stress of knee

Answer 6

LCL

Question 7

the medical meniscus attaches to

Answer 7

MCL

Question 8

optimizes force transmission by increasing contact area

Answer 8

meniscii

Question 9

what structures make up the posterior lateral corner?

Answer 9

popliteus tendon
LCL
popliteo-femoral ligament

Question 10

controls external rotation, varus, and posterior translation of leg

Answer 10

posterior lateral corner

Question 11

most sensitive test for ACL tear

Answer 11

lachmans

Question 12

patient knee bent at 20-30 degrees
pull tibia anterior

what test is this describing?

Answer 12

lachmans

Question 13

laxity at 30 in valgus stress indicates injury to

Answer 13

MCL

Question 14

laxity at 0 in valgus stress indicates injury to

Answer 14

MCL and ACL/PCL

Question 15

laxity at 30 in varus stress indicates injury to

Answer 15

LCL

Question 16

laxity at 0 in varus stress indicates injury to

Answer 16

LCL and ACL/PCL

Question 17

LCL injury is commonly accompanied by injury to the

Answer 17

posterior lateral corner

Question 18

test to evaluate PLC

Answer 18

dial test

positive is greater than 10 degrees of asymmetry

Question 19

asymmetry at 30 degrees in Dial test indicates

Answer 19

PLC injury

Question 20

asymmetry at 30 and 90 in Dial test indicated injury to

Answer 20

PLC and PCL

Question 21

most sensitive exam finding for meniscus tear

Answer 21

joint line tenderness

Question 22

tests for meniscal tears [3]

Answer 22

mcmurrays
apleys
thessaly

Question 23

unhappy triad

Answer 23

MCL
ACL
medial mensicus tear

Question 24

caused by valgus force with tibial anterior translocation and external rotation

Answer 24

unhappy triad

Question 25

unhappy triad causes a kissing contusion between [..] and [...]

Answer 25

lateral femoral condyle posterior lateral tibial plateu

Question 26

ATFL is being stretched when the ankle is [...] flexed

Answer 26

plantar flexed **relaxed with dorsiflexion

Question 27

achilles is being stretched when the ankle is [...] flexed

Answer 27

dorsiflexed **relaxed with plantar flexion

Question 28

plantar/dorsiflexion of the ankle occurs at what joint?

Answer 28

tibiotalar

Question 29

inversion/eversion of the foot occurs at what joint

Answer 29

subtalar (talocalcaneal)

Question 30

what two joints make up the transverse tarsal joint?

Answer 30

talonavicular talocuboid

Question 31

restrains inversion while in plantar flexion

Answer 31

ATFL

Question 32

weakest ligament of the lateral ankle

Answer 32

ATFL

Question 33

restrains inversion when neutral or dorsiflexion

Answer 33

calcaneofibular ligament

Question 34

prevents subtalar inversion

Answer 34

calcaneofibular ligament

Question 35

prevents posterior talar displacement

Answer 35

posterior talofibular

Question 36

ankle anterior drawer test assesses the integrity of

Answer 36

ATFL

Question 37

talar tilt (inversion stress) assesses the ingetrity of

Answer 37

calcaneofibular ligament

Question 38

resists eversion of the hindfoot

Answer 38

deltoid ligament

Question 39

restrains valgus tilting of talus

Answer 39

deltoid ligament

Question 40

ligaments of ankle syndesmosis [4]

Answer 40

AITFL PITFL TTFL interosseous membrane

Question 41

maintains the integrity of the mortise

Answer 41

ankle syndesmosis

Question 42

tests to assess ankle syndesomosis [3] Bonus points: what ligament are they stressing?

Answer 42

eversion stress- deltoid squeeze test- pain at syndesmosis external rotation stress- AITFL

Question 43

eversion stress tests assesses function of

Answer 43

deltoid

Question 44

squeeze test assesses function of

Answer 44

syndesmosis **pain eillicited is positive

Question 45

external rotation stress test of ankle assesses function of

Answer 45

AITFL

Question 46

indications for ankle imaging according to Ottawa ankle rules:

Answer 46

if tenderness is felt at -posterior edge of lateral mal -base of 5 MTP -navicular -posterior edge of medial mal get Xrays, more likely for fx

Question 47

getting weight bearing X rays is crucial for evaluation of

Answer 47

syndesmosis

Question 48

ACL tear is diagnosed on exam with what tests?

Answer 48

anterior drawer Lachman's (more sensitive)

Question 49

ACL functions to

Answer 49

prevent anterior translation of the tibia relative to the femur

Question 50

a blow to the anterior tibia with a flexed knee can cause a tear in

Answer 50

PCL **like knee against dashboard in MVC

Question 51

the PCL functions to

Answer 51

prevent posterior translation of the tibia

Question 52

the PCL originates from the

Answer 52

medial femoral condyle

Question 53

what tests would you expect to be positive when evaluating a high ankle sprain?

Answer 53

eversion stress test external rotation stress test squeeze test

Question 54

pain illicited from the squeeze test indicates

Answer 54

injury to syndesmotic complex

Question 55

LCL injuries can be associated with injuries to the

Answer 55

PLC

Question 56

structures of PLC

Answer 56

popliteus tendon popliteofibular ligament

Question 57

positive Dial test at 30 degrees suggests injury to

Answer 57

PLC

Question 58

positive Dial at 90 degrees suggests injury to

Answer 58

PLC and PCL

Question 59

pain and increased laxity of valgus stress at 30 degrees indicates

Answer 59

isolated MCL tear

Question 60

pain and increased laxity of valgus stress at both 0 and 30 degrees indicates

Answer 60

MCL + ACL/PCL tear

Question 61

lateral translation of the talus on Xray indicates damage of what structure?

Answer 61

deltoid