knee assessment Flashcards
resting / open packed position of knee
25 deg flexion
close packed position of knee
full ext + lateral tibial rot
shape of medial meniscus
C shaped
shape of lateral meniscus
O shaped
in the inner 2/3 of menisci, they are vascular/avascular
avascular
what holds menisci in place on the tibia
coronary ligaments
MCL and medial meniscus are directly connected. True or false
True
which meniscus has the most amount of movement in extension to flexion?
lateral meniscus
meniscectomy can reduce the shock absorption capacity of the knee by ___%
20%
This meniscus is more mobile and less firmly attached to the tibia, so it is less prone to injury
lateral
this ligament resists posterior lateral rotations of the tibia
popliteofibular ligament
The anterior cruciate ligament is composed of two bundles. The anteromedial bundle is taut in ______. The posterolateral bundle is taut in ______.
flexion
extension
facet of the patella that is most frequently the 1st affected with chondromalacia patella (patellar cartilage degeneration) or patellofemoral syndrome
odd facet
the patella improves the efficiency of knee extension during the final ___ degrees.
30
loading of the patella during activity is directly related to the amount of force and tension required by the ….
quads
Meniscal injuries—occur from torsion that combines _________ and ________
compression and rotation
avulsions typically comes from slow/fast force?
slow
ligament tears tend to come from slow/fast forces?
fast
tibial tubercle apophysis AKA
osgood-schlatter disease
knee is normally in about ___degrees of valgus
6 degrees
________ ________ syndrome is a term coined to describe patients who have increased femoral anteversion, genu valgum, vastus medialis obliquus (VMO) dysplasia, lateral tibial torsion, and forefoot pronation. These factors create excessive lateral forces and contribute to patellofemoral dysfunction.
miserable alignment syndrome
A popliteal _______ cyst, which is caused by herniation of synovial tissue through a weakening in the posterior capsule wall.
Baker’s cyst
this sign may be present with pathological patellar tracking and patella instability - the patella suddenly moves medially to enter the trochlea upon initiation of knee flexion
J sign
knee terrible triad
ACL, MCL, medial meniscus
3 test group for knee ligament sprains
Lachman
Anterior Drawer
Pivot Shift
ACL is connected to which meniscus
lateral
the lateral meniscus is connected to the LCL. T or F
False
popliteus cross the tibiofemoral joint underneath the LCL. T or F
True
Ottawa Knee Rules for Radiographs of Acute Knee Injuries
Patient age younger than 55 or older than 18 years
Fibular head tenderness
Patellar tenderness
Inability to flex knee to 90°
Inability to bear weight and walk four steps when examined and at time of injury
Pittsburgh Knee Rules
Blunt trauma or fall
Patient age younger than 12 years or older than 50 years
Inability to walk four weightbearing steps on affected leg