Cruciate & meniscal injuries

Question 1

which ligaments can massage access and treat

Answer 1

lateral and medial collateral ligaments

Question 2

when are the cruciate ligaments most taut

Answer 2

knee extension

they cross eachother forming an X

they are in the jt capsule but not synovium

Question 3

cruciates are within the joint capsule but not within the ____

Answer 3

synovium

Question 4

runs from anterior portion of tibial intercondylar area to medial aspect of lateral femoral condyle in intercondylar notch =

Answer 4

anterior cruciate ligament

(anterior –> medial)

Question 5

what does the ACL prevent

Answer 5

knee extension
anterior translation of tibia on femur
internal tibial rotation

PCL prevents posterior translation of tibia on femur and internal tibial rotation

Question 6

what mms are antagonists in function to ACL

Answer 6

quads

Question 7

directions of fibers of PCL from tibia to femur=

“SAM”

Answer 7

obliquely superior, anterior, medial

PCL = SAM

Question 8

both ACL and PCL work to prevent ____ tibial rotation

Answer 8

internal

Question 9

what is the P from with a grade 3 / rupture of ACL

Answer 9

swelling, not the actual rupture

Question 10

what is the usual resting position of the knee

Answer 10

25 degrees flexion

Question 11

what is considered significant loss of rom w testing for early and late subacute knee injnury

Answer 11

loss of ext greater than 10
loss of flexion greater than 125

Question 12

with ACL injury what tests are positive

Answer 12

Lachmans
Anterior drawer

Question 13

with PCL injury what tests are positive

Answer 13

posterior sag sign
posterior drawer tests

Question 14

with meniscal injury what tests are positive

Answer 14

Mcmurrays
bragards
apleys

Question 15

what is used to prevent contracture of patellar retinaculum

Answer 15

lateral and medial glides of patella

Question 16

where can TRPs produce buckling of the knee when walking

Answer 16

vastus medialis

Question 17

menisci transmit ____% of load of knee

Answer 17

30-55%

Question 18

medial meniscus forms

Answer 18

semi circle (C)

Question 19

what is the medial meniscus attached to

Answer 19

periphery to joint capsule & outer margin of medial tibial condyle by coronary ligament and MCL

Question 20

where does medial meniscus tear usually run in younger people

Answer 20

longitudinally (bucket handle tear)

in older people the tear is a degenerative horizontal tear w upper and lower portions sliding against eachother

Question 21

how does the lateral meniscus move

Answer 21

posteriorly during knee flexion by tendon of popliteus mm

Question 22

which portion of menisci have blood supply

Answer 22

outer portion where it attaches to the joint capsule

Question 23

joint play can be used in the ___ week if hypomobility is encountered at the tibiofemoral joint

Answer 23

3 week s

Question 24

runs from posterior portion of tibial intercondylar area to lateral aspect of medial femoral condyle in intercondylar notch =

Answer 24

PCL

(posterior –> lateral)

Question 25

causes of ACL injury

Answer 25

blow to posterior tibia or lateral knee forced hyperextension w internal rotation of tibia

Question 26

aucte /subacute tx for ACL/PCL injury

Answer 26

RICE compensating structures - low back, glutes, hamstrings, quads cold hydro on injury MLD patellar mobilization (lat and med glides) used to prevent contracture of retinaculum mm squeezing distally joint play for foot and ankle

Question 27

what muscle can produce buckling of the knee if weak

Answer 27

vastus medialis

Question 28

what mm can give rise to pain and weakness when going down stairs

Answer 28

rectus femoris trigger points

Question 29

quads cause anterior tibial translation

Answer 29

hamstrings cause posterior tibial translation

Question 30

what is the purpose of menisci

Answer 30

shock absorption increased gliding potential between femur and tibia transmit load of knee

Question 31

during knee extension the meniscus moves

Answer 31

anteriorly making space to prevent dislocation

Question 32

lateral meniscus is more mobile then medial.. therefore less prone to

Answer 32

damage

Question 33

cause of meniscus injury

Answer 33

twisting injury while foot is weight bearing and anchored to the ground

Question 34

knee may lock in a particular position as the torn meniscus ...

Answer 34

prevents knee motion

Question 35

when going downstairs quads are ______ engaging

Answer 35

eccentrically acting as brakes to stop you from falling forward