Chapter 9

Which of the following muscles externally rotates the knee?

Biceps femoris

Mechanisms of injury for meniscal tears most commonly include _____.

Compression and shear

Which of the following is not true regarding the quadriceps muscle group?

Covered by the vastus fascia

Which of the following is not correct regarding the menisci of the knee?

Decrease Stability

Which is not a factor implicated in the higher incidence of ACL injuries in females compared to males?

Decreased Q angle

The rectus femoris is more powerful in extending the knee when the hip is in _____.

Extension

Which are actions of gracilis?

Knee flexion & internal rotation

Which of the following is true regarding the medial collateral ligament?

Maintains medial stability by resisting valgus forces

Which of the following conditions involves apophysitis?

Osgood Schlatter's disease

The _____ provides the primary restraint for posterior movement of the tibia relative to the femur.

PCL

Muscles that flex the knee include all of the following except _____.

Rectus Femoris

All of the following are key bony landmarks for knee joint actions except the _____.

Superior and inferior patellar malleoli

Which of the following is correct regarding the patellofemoral joint?

The joint involves the interaction between the kneecap and femoral condyles.

Which of the following is not one of the quadriceps muscles?

Vastus medius

The knee tibiofemoral joint is a/a _____ joint.

ginglymus

The pes anserinus is the common insertion of the _____.

gracilis, sartorius, and semitendinosus

Which muscle is absent in some people?

plantaris

Which of the following is a uniarticular knee flexor?

popliteus

Which of the following muscles internally rotates the knee?

popliteus

The vastus medialis provides a(n) _____ pull on the patella when contracting concentrically.

superomedial

As the knee approaches full extension, the tibia must externally rotate approximately 10 degrees to achieve proper alignment of the tibial and femoral condyles.

true

The biceps femoris muscle inserts on the head of the fibula and lateral tibial condyle.

true

The close-packed position for the knee is full extension.

true

The iliotibial tract of the tensor fasciae latae muscle inserts on Gerdy's tubercle.

true

The knee joint is the largest diarthrodal joint in the body

true

The medial meniscus is larger than the lateral meniscus.

true

The semimembranosus muscle is located posteromedially and internally rotates the knee.

true

The most common serious knee ligament injury involves the _____.

Anterior cruciate ligament

The Q angle is usually _____ or less for males and _____ or less for females.

15;20

During weight-bearing exercise, greater forces are transmitted to the fibula than to the tibia.

false

From a position of full extension, the knee can normally move through about 180 degrees of flexion.

false

In normal, healthy lower limbs, the hamstrings are stronger than the quadriceps.

false

Tears occurring within the innermost 1/3 of menisci are more likely to heal than tears within the outermost 1/3 of menisci.

false

The femoral condyles articulate with the fibular condyles during knee flexion.

false

The lateral collateral ligament is injured more frequently than other knee joint ligaments.

false

The patella serves as a pulley by improving the angle of pull of the hamstring muscles, creating a greater mechanical advantage during knee flexion.

false

The popliteus originates on the posterior fibula.

false