Knee Flashcards
Q angle
ASIS to mid-patella to tibial tubercle
male: <15
Knee extension
0 - 5-15
Knee flexion
0 - 125-135
Tibial IR/ER
10-15
Patella Displacement
translate patella medially and laterally
Divide patella in 4 quadrants
patella should translate 2 quadrants in both directions
decreases mobility indicates tight retinaculum
Patella apprehension
flex 20, push patella laterally
pain/apprehension of subluxation: patellar instability or medial retinaculum/MPFL injury
Joint line tenderness
most sensitive exam for meniscal tear
patella compression/grind test
extend knee, fire quads, compress patella
pain: chondromalacia, OCD, PF arthritis/DJD of patella
J sign
actively extend knee from flexed position
lateral displacement of patella in full extension: maltracking
Mc Murray
Medial Meniscal Tear: Flex, varus, ER knee, then extend
Lateral Meniscal Tear: Flex, valgus, IR knee, then extend
Apley’s Compression
prone, knee 90, compress and rotate
pain or pop indicated meniscal tear
Lachman
flex knee 20-30, anterior force on tibia ACL injury (most sensitive) grade 1: 0-5mm grade 2: 6-10mm grade 3: >10mm A: good B: no endpoint
Anterior drawer
flex knee 90, anterior force on tibia
ACL injury
Pivot Shift
supine, extend knee, IR, valgus force on proximal tibia then flex knee
clunk with knee flexion indicates ACL injury
Posterior Drawer
flex knee 90, posterior force on tibia
PCL injury