Flashcards in Soft Tissue Deck (22):
Where does the Menisci distribute load from the covex femoral condyles to?
Relatively flat tibial articular surfaces
Is the medial meniscus fixed or mobile?
Is the lateral meniscus fixed or mobile?
What happens in regards to the tibia during knee pivoting?
Internally rotates on flexion and externally rotates on extension
What ligament resists valgus stress?
Medial collateral ligament
What ligament resists varus stress?
Lateral collateral ligament
What does the anterior cruciate ligament resist against?
Anterior subluxation of the tibia and internal rotation of the tibia in extension
What does the posterior ligament resist against?
Posterior subluxation of the tibia i.e. anterior subluxation of the femur and hyperextension of the knee
What resists against external rotation of the tinia in flexion?
The posterolateral corner - The PCL and the LCL with popliteus and other small ligaments
What miniscal tears can occur in the over 40's?
Atraumatic spontaneous degenerative tears
What meniscal tears wont heal?
When would you consider arthroscopic repair?
in acute peripheral tears in younger patient
When would a patient have 15 degree springy block to extension?
Displaced bucket handle tear
What may develop if the knee remains locked?
What may a degenerative tear represent?
1st stage OA
What is a grade 1 knee ligament injury?
Sprain, tear some fibres but macroscopic structure intact
What is a grade 2 knee ligament injury?
Partial tear, some fascicles disrupted
What is a grade 3 knee ligament injury?
What are the options to treat a ruptures ACL?
Autograph - patellar tendon or hamstrings
Allograph - Achilles
Stick ACL to PCL
How long does rehab take for ACL reconstruction?
3 months to a year
What is Osteochondritis Dissecans?
An area of knee that loses its blood supply and cartilage, bone can fragment off