9/18 Knee Competency Flashcards
What is Genu valgum?
posture with knees close together and feet farther apart (knock-kneed)
What Genu Varus?
posture where the legs appear bowed with feet together (bow-legged)
What is Genu recurvatum?
posture viewed from a lateral view, knee has a backward curvature
For tibial rotation, what is the normal degree of lateral rotation?
10°
Striking the patellar tendon allows the observer to determine if which dermatome is working?
L4
How is knee strength testing performed?
By having the pt. flex and extend the knee joint against resistance (student doctors hand)
What rating would you give for a knee with full ROM against gravity and against resistance
5/5
How do you test for Genu varus stress?
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)
How do you test for Genu valgus stress?
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)
How do you perform Anterior Drawer test? What are you testing?
flex the knee 90°
sit on the foot
place thumbs on tibial condyles
pull outward
Testing ACL (anterior cruciate ligament)
How do you perform Lachman’s test? What are you testing?
flex the knee 15° - 30°
hold distal femur and proximal tibia
Testing ACL (anterior cruciate ligament)
How do you perform Posterior Drawer test? What are you testing?
flex the knee 90°
put both thumbs on the tibia condyles
Testing PCL (posterior cruciate ligament)
How do you perform Reverse Lachman’s test?
flex the knee 15° - 30°
stabilize distal femur and proximal tibia
pushdown down and inwards on tibia
Testing PCL (posterior cruciate ligament)
How do you perform McMurray’s test? What are you testing?
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
How do you perform Apley’s Grind -Compression Test? What are you testing?
pt. prone
knee flexed 90° load down on leg
induce internal and external rotation
testing for meniscal tear or collateral ligament injury
How do you perform Apley’s Grind -Distraction test? What are you testing?
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)
How do you perform the Patellar Laxity test? What are you testing?
extend the knee
push patella laterally by pushing on the medial side of the patella
testing for previous patellar dislocation or severe instability
How do you perform the Patellar Apprehension test? What are you testing for?
Same as Patellar Laxity test, but motion induces pain or discomfort
testing for previous patellar dislocation or severe instability
How do you perform Patellar Compression? What are you testing for?
extend knee
push down on patella
move medially and laterally
pain/grinding = + test
testing for damage to articular surfaces (chondromalacia) or inflammation
How do you perform Patella-Femoral Grinding? What are you testing for?
pinch patella superiorly and then push inferiorly
have pt. flex quadricep
pain or crepitation = + test
testing for articular surface damage (chondromalacia)
What do we call damage to the patellofemoral articular surface?
Chondromalacia
degeneration or softening of articular surface due to poor alignment/tracking
How do you perform Patellar Glide test? What are you testing for?
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)
What is Jumper’s Knee?
overuse of patella below the patella
What is Quadriceps Tendonitis?
overuse of patella above the patella
