Flashcards in 4- Knee Conditions Deck (26)
Describe a "total" knee replacement
Resurfacing all 3 compartments of the knee
Describe a "partial" knee replacement
Resurfacing 1 compartment of the knee (usually patellofemoral)
There is a greater incidence of pain assoc. with knee replacements compared to hip replacements. True/False?
How do meniscal tears classically occur?
Where do patients usually localise meniscal tear injury?
Joint line of the knee
If a patient describes a "locked knee", what pathology should be suspected?
Bucket-handle mensical tear
Define true "locking" of the knee
Mechanical block to full knee extension
What is the difference between locking and pseudolocking of the knee?
Pseudolocking will resolve spontaneously/patient describes trick manoevure to overcome the locking
How do ACL ruptures classically arise?
Great rotational force upon a planted foot
What, clinically, usually accompanies an ACL rupture?
Rotatory instability (chronic)
A rugby tackle from the side will usually cause which ligament to damage?
Medial collateral, causing valgus stress injury
A direct blow to the anterior tibia with the knee flexed (car crash) may rupture which ligament?
A varus stress injury causes rupture of which ligament?
Which test is used to define a meniscal tear?
Which meniscal tear is more common - medial or lateral?
(it is less mobile)
Which type of meniscal tear causes a bucket-handle tear?
List the 4 types of meniscal tear
Degenerative meniscal tears are usually Steinmann's positive. True/False?
Why do meniscal tears have limited healing potential?
Small blood supply
What clinical tests will help define ACL rupture?
Anterior drawer test
Primary repair of ACL rupture is not effective. True/False?
Most get reconstruction
What does reconstruction of ACL involve?
Tendon grafting (patellar/temitendinouus-gracilis)
What structures are involved in the extensor mechanism of the knee?
How does the patellar/quadriceps tendon usually rupture?
Rapid contractile force (lifting heavy weight)
What clinical test helps define whether the extensor mechanism of the knee is intact?
Straight leg raise