Ch. 9 Knee Joint

Question 1

Largest diathrodial joint in body?

Answer 1

Knee joint

Question 2

Between fibula and tibia, which bears most of the weight?

Answer 2

Tibia (medial bone)

Question 3

Which bone in the knee area is not part of the knee joint?

Answer 3

Fibula (lateral)

Question 4

Bone that is sesamamoid (floating), & is imbedded in quadriceps and patellar tendon

Answer 4

Patella

Question 5

Largest bone in body

Answer 5

Femur

Question 6

Bony landmarks in knee joint (TtMfcLfc)

Answer 6

• Tibial tuberosity
• Medial & lateral femoral
condyles

Question 7

2 knee joints

Answer 7

Tibiofemoral joint (ginglymus)
Patellofemoral joint

Question 8

What forms cushion between joints that is attached to tibia?

Answer 8

Menisci/meniscus

Question 9

What enhances stability?

Answer 9

Mensisci/ meniscus

Question 10

What forms receptacle for medial femoral condole and is the larger meniscus?

Answer 10

Medial meniscus

Question 11

What meniscus receives lateral femoral condyle

Answer 11

Lateral meniscus

Question 12

Supplies knee w/ synovial fluid & lies under patella and between surfaces of tibia and femur. Is considered the capsule of the knee

Answer 12

Synovial cavity

Question 13

Posterior to patellar tendon

Answer 13

Infrapatellar fat pod

Question 14

How many bursae are in & around the knee that absorbs shock/reduces friction

Answer 14

10

Question 15

What is the ACL and PCL?

Answer 15

Anterior cruciate ligament (ACL) &
posterior cruciate ligament (PCL)

Question 16

Which Cruciate ligament stabilizes femur?

Answer 16

ACL

Question 17

Which Cruciate ligament stabilizes tibia?

Answer 17

PCL

Question 18

What injury in the knee is more common in females?

Answer 18

ACL injury/tear

Question 19

Causes of ACL Tear (Nrf: P,C,Lvp,H,Q
VqcTf)

Answer 19

noncontact rotary forces: planting, cutting, landing in a valgus position, hyperextension, or by violent quadriceps contraction which pulls tibia
forward on femur

Question 20

PCL injuries

Answer 20

Direct contact on anterior tibia with an opponent or playing surface

Question 21

What is the MCL & LCL

Answer 21

• Medial collateral ligament (MCL) (TIBIAL CL)
• Lateral collateral ligament (LCL)
(FIBULAR CL)

Question 22

Which ligament is commonly injured in contact sports?

Answer 22

MCL

Question 23

Alignment Variation: Bending backward/knee hyperextension

Answer 23

Recurvatum

Question 24

Alignment Variation: Outward angulation of the distal segment of a bone or joint/knocked knees

Answer 24

Valgus

Question 25

Alignment Variation: Inward angulation of the distal segment of a bone or joint/bowlegs

Answer 25

Varus

Question 26

What is the anotomical position of knee extension (starting point)

Answer 26

0°, not uncommon to have hyperextension or 10°

Question 27

Internal & external rotation occurs when knee is flexed at…

Answer 27

30° or greater

Question 28

From flexion to extension, what is the term knee is said to extend

Answer 28

Knee “screws home” due to shape of femoral condyle

Question 29

TF: No rotation of knee when in full extension

Answer 29

True

Question 30

Bending or decreasing angle between femur & leg, characterized by heel moving toward buttocks

Answer 30

Flexion

Question 31

Straightening or increasing angle between femur & leg

Answer 31

Extension

Question 32

Rotary movement of leg laterally away from midline

Answer 32

External rotation

Question 33

Rotary movement of leg medially toward midline

Answer 33

Internal rotation

Question 34

3 nerve plexus in knee joint

Answer 34

-lumbosacral plexus lumbar plexus sacral plexus

Question 35

Lumbar plexus goes to…

Answer 35

Femoral nerve -quadriceps

Question 36

Sacral plexus goes to…

Answer 36

Sciatic nerve -tibial and fibular division -hamstrings

Question 37

Quadricep muscle group are primarily needed to…

Answer 37

Extend knee Vital for jumping (acts as decelerator)

Question 38

Quadriceps location

Answer 38

Anterior portion of thigh

Question 39

4 quadricep muscles (RF,Vl,Vi,Vm)

Answer 39

-Rectus femoris • Vastus lateralis • Vastus intermedius • Vastus medialis

Question 40

Quad strength or power may be indicated by… (test)

Answer 40

Vertical jump

Question 41

…&… are essential for maintenance or patellofemoral stability

Answer 41

Strength & endurance

Question 42

Intersection of two imaginary lines at the patella/knee joint

Answer 42

Q angle

Question 43

The two imaginary Q angle lines

Answer 43

• Central line of pull: ASIS to patella • Line of pull of patella: patella to tibial tuberosity

Question 44

Males have 15° or less Q angle, whereas females have 20° or less due to having a…

Answer 44

Wider pelvis

Question 45

O&I Rectus femoris

Answer 45

• O: ilium • I: patella

Question 46

O&I Vastus lateralis

Answer 46

• O: femur • I: patella

Question 47

Largest quadriceps muscle

Answer 47

Vastus lateralis

Question 48

O&I Vastus intermedium’s

Answer 48

• O: femur • I: patella

Question 49

Only quadriceps muscle that is not palpable

Answer 49

Vastus intermedius

Question 50

Central quad muscle

Answer 50

Rectus femoris

Question 51

O&I Vastus Medialis

Answer 51

• O: femur • I: patella

Question 52

Hamstring muscles are primarily responsible for…

Answer 52

Knee flexion

Question 53

Location or hamstring

Answer 53

Posterior portion of thigh

Question 54

TF: Hamstring muscles are ANTAgonists to quadriceps at knee

Answer 54

True

Question 55

3 hamstring muscles

Answer 55

• Semimembranosus • Semitendinosus • Biceps femoris

Question 56

O&I Semimembranosus muscle and is under…

Answer 56

• O: ischium • I: tibia • Under semitendinosus

Question 57

O&I Semitendionsus muscle that is on top of…

Answer 57

• O: ischium • I: tibia • “On top” of semimembranosus

Question 58

O&I Biceps femoris

Answer 58

• O: ischium, femur • I: tibia, fibula

Question 59

Most superficial of the hamstrings

Answer 59

Biceps femoris

Question 60

O&I Popliteus muscle

Answer 60

• O: femur • I: tibia

Question 61

Agonists: Knee extension

Answer 61

• Rectus femoris • Vastus lateralis • Vastus intermedius • Vastus medialis

Question 62

Agonists: knee flexion

Answer 62

• Biceps femoris • Semitendinosus • Semimembranosus

Question 63

Agonists: Knee internal rotation 3

Answer 63

• Semitendinosus • Semimembranosus • Popliteus

Question 64

Agonist: Knee external rotation 1

Answer 64

Biceps femoris