MSS Week 11

Question 1

What is the difference between the anterior cruciate ligament and posterior ligament?

Answer 1

The anterior cruciate ligament

1) prevents the posterior displacement of the femur on the tibia, prevents the tibia from sliding forward along the femur,
2) extends from the anterior intercondylar area of the tibia, moves posteriorly to attach to the medial side of the lateral femoral condyle
3) limiting extension and rotation

The posterior cruciate ligament

1) prevents the anterior displacement of the femur on the tibia, prevents the tibia and femur from sliding towards each other,
2) extends from the posterior intercondylar area of tibia, moves anteriorly to attach to the lateral side of the medial femoral condyle
3) limiting flexion and rotation

Question 2

What are the functions of both the medial collateral ligament and lateral collateral ligament?

Answer 2

They both prevent abduction, adduction and rotation of the knee

Question 3

What is the three functions of the Menisci?

SRBS

Answer 3

1) Shock absorbers
2) Reduced friction
3) Poor blood supply in adults

Question 4

What is the difference between the lateral meniscus and the medial meniscus?

Answer 4

Lateral meniscus: more freely moveable than medial meniscus

Medial meniscus: attached to adjacent medial collateral ligament therefore more prone to damage when the medial ligament is damaged

Question 5

Name the functions for the following

1) Suprapatella bursa (Co)
2) Subcutaneous prepatellar bursa (2P)
3) Deep and superficial infrapatella bursae (P)

Answer 5

1) Suprapatella bursa: Large and communicates with knee joint cavity
2) Subcutaneous bursa: protection during kneeling
3) Deep and superficial infrapatella bursae: protection during movements of quads

Question 6

What is the difference between anterior drawer test and posterior drawer test?

Answer 6

Anterior Drawer Test: the proximal head of the patient’s tibia can be pulled anteriorly on the femur, if the tibia moves forward, the ACL is torn

Posterior Drawer Test: the proximal head of the patient’s tibia can be pushed posteriorly on the femur, if the tibia moves backward, the PCL is torn

Question 7

What are the boundaries of the Popliteal Fossa?

SM SL IM IL

Answer 7

Superio-medial: semimembranosus and semitendinous
Superio-lateral: biceps femoris
Inferio-medial: medial head of gastrocnemius
Inferio-lateral: lateral head of gastrocnemius

Question 8

What are the three contents of the Popliteal Fossa

Please Take CandyFats

Answer 8

1) Popliteal Artery and Vein
2) Tibial Nerve
3) Common Fibular Nerve