Knee Flashcards
The first muscle to atrophy in knee injiury, what action
Vastus Medialis Obliquus, last 15 degrees of extension
Most important step in PE
check the normal side first, then, compare to the injured side
Presence of ___ in the synovium is indicative of a fracture, and can be seen on a ___
fat, T2 MRI
glycoprotein that is the key lubricating component of synovial fluid
Lubricans
Nature of mensicus healing
Poor vascular supply, unlikely to heal
Deposition of calcium pyrophosphate, can cause loose bodies, and for the menisci to appear more radio opaque on MRI
Chondrocalcinosis
Chronic Tear of the meniscus presents as
able to still walk unless knee is locked
A test for Torn Meniscus that involves circumduction and extension with valgus force, feeling for a pop on the joint line
McMurrays Test
Which horn of the menisci is thickest
Posterior
Repair of menisci
only 5% are repairable, if the tear occurs in the part that has blood supply- red cell
indicative of a displaced bucket handle tear of the medial meniscus in the presence of a normal MCL
Double PCL Sign
ACL components and their action
- Anteromedial—tight in flexion
* Posterolateral – tight in extension
Most sensitive test for ACL tear, how does it differ from drawers
Lachman’s, knees bent at 30 degrees not 90
Terrible Triad involves the
ACL, MCL, and medial meniscus
Common causes of PCL tear
Dashboard injury/posterior force on tibia
