Knee Injury Flashcards
Which meniscus in the knee is more fixed and less mobile - medial or lateral?
Medial
Which ligament resists valgus stress?
Medial cruciate ligament
Which ligament resists varus stress?
Lateral cruciate ligament
What does the anterior cruciate ligament prevent?
Subluxation of tibia anteriorly
What does the posterior cruciate ligament prevent?
Subluxation of tibia posteriorly
Hyperextension of knee
A patient who has difficulty descending stairs may have rupture of which ligament in the knee?
Posterior cruciate ligament
Which meniscal tear - medial or lateral - is more common?
Medial (undergoes more stress)
Meniscal tears heal easily. True/False?
False
Very limited healing potential (poor blood supply)
What is a “bucket handle tear”, how does it present and how is it treated?
Meniscus flap gets caught in intercondylar notch
Presents as locked knee
Arthroscopic repair/menisectomy
Meniscal tear due to degenerative damage is pointless to operate on. True/False?
True
Little improvement, sometimes worse
Describe grade 1 knee ligament tear
Tear of some ligament fibres but macroscopically everything is in tact (sprain)
Describe grade 2 knee ligament tear
Partial tear where some fascicles are disrupted
Describe grade 3 knee ligament tear
Complete tear of the ligament
ACL rupture repair never really works - what is done instead?
Reconstruction (allograft, autograft or synthetic graft)
If a patient suddenly twists, which ligaments are susceptible to tear?
ACL
Meniscus
