Flashcards in Lecture 4 Deck (114)
“A lachman is as good as?”
Anterior drawer test?
Lachman test sensitive and specificity? (ACL)
Anterior drawer test sensitive and specificity? (ACL)
Pivot shift test sensitive and specificity? (ACL)
Joint line tenderness sensitive and specific? (Meniscus)
Thessaly test sensitive and specific? (Meniscus)
McMurray test sensitive and specific? (Meniscus)
Positive McMurrays test?
Pain or pop
Pt stands in one foot while holding you for balance. They rotate internal and external.
Positive test will get popping and clicking
Conducted with foot at 5* them 20* flexion with the foot flat
Posterior sag test?f
Knee at 90* and the tibia is not a straight line
Pt lying prone and feet should mirror each other when knee is flexed at 30*
What is noble’s test?
Palpate lateral femoral condyle
Flex and extend knee
Pos: pain at site of palpation
Ottawa knee rules?
When to order an x ray
Age >55 or <18
Unable to walk
TTP on patella
TTP on fibular head
Unable to flex 90*
How accurate is the ottawa knee criteria?
Reduced radiographs by 49%
What to look for on lateral images of knee?
Evaluate avulsion fx
What is patella alta/baja?
Patella Alta: high riding patella
Patella baja: low riding patella
Not affect knee mobility
What is Sunrise imaging?
Patella rising over knee like the sun over the mountains
Sunrise imaging assesses?
Depth of trochlear groove
What is a pellegrini stiega?
Avulsion fx of MCL on femur
What should you look for in the joint space between femur and tibial heads?
How common are ACL ruptures?
200,000 ACL rupture per yr in the US
1 in 3500 people
Should i fix acl ruptures?
Reconstruction is demonstrated to reduce sequelae of chordal and meniscal injury.
Who is more likely to get ACL rupture? Why?
Females > males
Wider pelvis (wide Q)
Less muscle development
Hypoplastic vastus medialis oblique
Narrow femoral notch
External tibial torsion
2 of them
AM: tight in flexion
PL: tight in extension
What is the primary stabilizer of the knee against anterior translation?
What tends to cause acl rupture?
Usually noncontact injuries
What is the knee terrible traid?
1. Meniscal tear
2. Medial collateral ligament
3. ACL rupture
Why is blood in the joint bad?
Blood is an irritant