Lab-Approach to Knee Exam Flashcards
As the foot dorsi-flexes, how does the fibular head move?
anteriorly
As the foot plantar flexes, how does the fibular head move?
posteriorly
What is the valgus test used for?
to test for medial collateral ligament injury
what is a positive valgus test?
laxity or soft/absent endpoint, or pain
How do you perform the valgus test?
apply medial force on knee while abducting lower leg; perform at 30 and 0 degrees
what is the varus test used for?
to test for lateral collateral ligament injury
what is a positive varus test?
increased laxity or soft/absent endpoint, or pain
how do you perform the varus test?
lateral force on the knee while adducting the lower leg
What is Lachman’s test used for?
to test ACL injury
How do you perform Lachman’s test?
stabilize thigh and pull tibia anteriorly
what does McMurray’s test used for?
to test for meniscus injury or tear
how do you perform the McMurray test on a medial meniscus?
tibia is rotated externally while valgus stress is applied to the knee. then the leg is moved into extension
how do you perform the McMurray test on a lateral meniscus?
tibia is rotated internally while varus stress is applied to the knee. then move leg into extension
what is a positive McMurray test?
palpable click OR pain during extension
What is the indication for the apley’s grind test-compression test?
possible meniscal injury, collateral ligament injury, or both
what is the bounce home test used for?
to test for a meniscus injury or effusion or both
what is a positive bounce home test?
failure to fully extend the knee
What is the patella-femoral grind used for?
to diagnose chondromalacia patella
What is the normal ROM degree of flexion of the knee?
145-150 degrees
What is the normal ROM degree of extension of the knee?
0 degrees
What is the normal ROM degree of internal rotation of the knee?
10 degrees
What is the normal ROM degree of external rotation of the knee?
10 degrees
What is the normal ROM degree of the fibular head motion?
~30 degrees
How would test for the L1-L3 nerve roots?
by checking sensation over the anteromedial thigh
How would you test the L4 nerve roots?
by checking sensation over the knee
How would you test the L5 nerve roots?
by checking sensation over the anterior leg and big toe
if you get pain with both distraction and rotation, why might you have?
collateral ligament damage
if you get relief of pain with distraction and rotation, what might you have?
meniscal injury
