The Knee Flashcards
unhappy triad is?
ACL, MCL, medial meniscus
results from knee flexion w/ foot planted and lateral impact
MCL injury
specialized exam for MCL injury?
Valgus Stress Test
gradation for MCL injury
0-4
0 is = to other knee
4 = > 20 mm medial joint space
tibial internal rotation and medial impact results in?
LCL sprain
LCL sprain specialized exam
Varus stress test
feeling/hearing a pop, immediate/transient pain, swelling, feeling of instability
planting/cutting, straight knee landing, one-step stop landing w/ knee hyperextended
ACL injury
rapid deceleration, weight bearing, twist/pivot
ACL injury
3 specialized exams for ACL injury
Lachman Test
Alternate Lachman Test
Anterior drawer test
Anterior impact w/ knee flexed at 90*, possibly hyperextension & rotation
PCL injury
Specialized exams for PCL injury?
Posterior drawer test
Posterior sag sign
due to excessive rotational force (femur on tibia)
meniscal injuries
joint line pain, inability to fully extend knee (described as “locking”), walking up & down stairs, difficult & painful squatting
meniscal injuries
which meniscus is more susceptible to injuries
medial meniscus
greater forces medially, less mobile structure than lateral meniscus
specialized exam for meniscal injury
McMurray test