Knee primary structures

Question 1

function of ACL

Answer 1

prevents anterior displacement of the tibia on the femur

Question 2

This consists of the arcuate ligament, oblique popliteal ligament, popliteus tendon, and lateral head of the gastroc. Assists the cruciate ligaments in controlling posterolateral rotary instability

Answer 2

arcuate ligament complex

Question 3

knee fat pads

Answer 3

quadriceps
prefemoral
infrapatellar

Question 4

anterior knee pain when infrapatellar fat pad is impinged

Answer 4

Hoffa’s syndrom

Question 5

LCL origin/insertion

Answer 5

lateral femoral condyle to fibular head

Question 6

MCL origin/insertion

Answer 6

medial femoral epicondyle to medial aspect of tibial shaft

Question 7

Pes anserine insertions

Answer 7

• gracilis
• semitendinosus
• sartorius

Question 8

plicae

Answer 8

• extensions of synovial membrane
• commonly found medial to the patella

no function, but can be a source of pain

Question 9

PCL function

Answer 9

prevents posterior displacement of the tibia on the femur

Question 10

Which of the retinacula is the strongest?

Answer 10

lateral

plays larger role in positioning