9/18 Knee Competency

Question 1

What is Genu valgum?

Answer 1

posture with knees close together and feet farther apart (knock-kneed)

Question 2

What Genu Varus?

Answer 2

posture where the legs appear bowed with feet together (bow-legged)

Question 3

What is Genu recurvatum?

Answer 3

posture viewed from a lateral view, knee has a backward curvature

Question 4

For tibial rotation, what is the normal degree of lateral rotation?

Answer 4

10°

Question 5

Striking the patellar tendon allows the observer to determine if which dermatome is working?

Answer 5

L4

Question 6

How is knee strength testing performed?

Answer 6

By having the pt. flex and extend the knee joint against resistance (student doctors hand)

Question 7

What rating would you give for a knee with full ROM against gravity and against resistance

Answer 7

5/5

Question 8

How do you test for Genu varus stress?

Answer 8

flex the knee 30° then apply force laterally (using your thumbs to push the knee joint out away from the body

strains the lateral collateral ligament (LCL)

Question 9

How do you test for Genu valgus stress?

Answer 9

flex the knee 30° then apply force medially (using your hands to push the knee joint inwards toward
the body

strains the medial collateral ligament (MCL)

Question 10

How do you perform Anterior Drawer test? What are you testing?

Answer 10

flex the knee 90°

sit on the foot

place thumbs on tibial condyles

pull outward

Testing ACL (anterior cruciate ligament)

Question 11

How do you perform Lachman’s test? What are you testing?

Answer 11

flex the knee 15° - 30°

hold distal femur and proximal tibia

Testing ACL (anterior cruciate ligament)

Question 12

How do you perform Posterior Drawer test? What are you testing?

Answer 12

flex the knee 90°

put both thumbs on the tibia condyles

Testing PCL (posterior cruciate ligament)

Question 13

How do you perform Reverse Lachman’s test?

Answer 13

flex the knee 15° - 30°

stabilize distal femur and proximal tibia

pushdown down and inwards on tibia

Testing PCL (posterior cruciate ligament)

Question 14

How do you perform McMurray’s test? What are you testing?

Answer 14

knee flexed

rotate tibia internally

apply varus (internal) stress

holding pressure extend knee

feel for popping or clicking = + test

repeat again with external tibial rotation and valgus (external stress)

Testing for medial or lateral meniscal tear

Question 15

How do you perform Apley’s Grind -Compression Test? What are you testing?

Answer 15

pt. prone

knee flexed 90° load down on leg

induce internal and external rotation

testing for meniscal tear or collateral ligament injury

Question 16

How do you perform Apley’s Grind -Distraction test? What are you testing?

Answer 16

pt. prone

lift up tibia while holding femur down w/ cephalid hand

rotate tibia external and internally

testing for meniscal tear or collateral ligament injury (more towards ligament damage)

Question 17

How do you perform the Patellar Laxity test? What are you testing?

Answer 17

extend the knee

push patella laterally by pushing on the medial side of the patella

testing for previous patellar dislocation or severe instability

Question 18

How do you perform the Patellar Apprehension test? What are you testing for?

Answer 18

Same as Patellar Laxity test, but motion induces pain or discomfort

testing for previous patellar dislocation or severe instability

Question 19

How do you perform Patellar Compression? What are you testing for?

Answer 19

extend knee

push down on patella

move medially and laterally

pain/grinding = + test

testing for damage to articular surfaces (chondromalacia) or inflammation

Question 20

How do you perform Patella-Femoral Grinding? What are you testing for?

Answer 20

pinch patella superiorly and then push inferiorly

have pt. flex quadricep

pain or crepitation = + test

testing for articular surface damage (chondromalacia)

Question 21

What do we call damage to the patellofemoral articular surface?

Answer 21

Chondromalacia

degeneration or softening of articular surface due to poor alignment/tracking

Question 22

How do you perform Patellar Glide test? What are you testing for?

Answer 22

pt. sitting

cephalic hand on patella w/ slight downward force

flex and extend knee manually

pain or crepitus or catching of patella = + test

testing for articular surface damage (Chondromalacia)

Question 23

What is Jumper’s Knee?

Answer 23

overuse of patella below the patella

Question 24

What is Quadriceps Tendonitis?

Answer 24

overuse of patella above the patella