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Kinesiology 3200 Principles of Human Movement > Ch. 9 Knee Joint > Flashcards

Ch. 9 Knee Joint Flashcards

1
Q

Largest diathrodial joint in body?

A

Knee joint

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2
Q

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

A

Tibia (medial bone)

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3
Q

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

A

Fibula (lateral)

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4
Q

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

A

Patella

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5
Q

Largest bone in body

A

Femur

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6
Q

Bony landmarks in knee joint (TtMfcLfc)

A

• Tibial tuberosity
• Medial & lateral femoral
condyles

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7
Q

2 knee joints

A

Tibiofemoral joint (ginglymus)
Patellofemoral joint

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8
Q

What forms cushion between joints that is attached to tibia?

A

Menisci/meniscus

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9
Q

What enhances stability?

A

Mensisci/ meniscus

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10
Q

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

A

Medial meniscus

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11
Q

What meniscus receives lateral femoral condyle

A

Lateral meniscus

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12
Q

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

A

Synovial cavity

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13
Q

Posterior to patellar tendon

A

Infrapatellar fat pod

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14
Q

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

A

10

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15
Q

What is the ACL and PCL?

A

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

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16
Q

Which Cruciate ligament stabilizes femur?

A

ACL

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17
Q

Which Cruciate ligament stabilizes tibia?

A

PCL

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18
Q

What injury in the knee is more common in females?

A

ACL injury/tear

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19
Q

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

A

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

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20
Q

PCL injuries

A

Direct contact on anterior tibia with an opponent or playing surface

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21
Q

What is the MCL & LCL

A

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

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22
Q

Which ligament is commonly injured in contact sports?

A

MCL

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23
Q

Alignment Variation: Bending backward/knee hyperextension

A

Recurvatum

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24
Q

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

A

Valgus

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25
Q

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

A

Varus

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26
Q

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

A

0°, not uncommon to have hyperextension or 10°

27
Q

Internal & external rotation occurs when knee is flexed at…

A

30° or greater

28
Q

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

A

Knee “screws home” due to shape of femoral condyle

29
Q

TF: No rotation of knee when in full extension

A

True

30
Q

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

A

Flexion

31
Q

Straightening or increasing angle
between femur & leg

A

Extension

32
Q

Rotary movement of leg laterally
away from midline

A

External rotation

33
Q

Rotary movement of leg medially
toward midline

A

Internal rotation

34
Q

3 nerve plexus in knee joint

A

-lumbosacral plexus
lumbar plexus
sacral plexus

35
Q

Lumbar plexus goes to…

A

Femoral nerve
-quadriceps

36
Q

Sacral plexus goes to…

A

Sciatic nerve
-tibial and fibular division
-hamstrings

37
Q

Quadricep muscle group are primarily needed to…

A

Extend knee
Vital for jumping (acts as decelerator)

38
Q

Quadriceps location

A

Anterior portion of thigh

39
Q

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

A

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

40
Q

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

A

Vertical jump

41
Q

…&… are essential for maintenance or patellofemoral stability

A

Strength & endurance

42
Q

Intersection of two imaginary lines at the patella/knee joint

A

Q angle

43
Q

The two imaginary Q angle lines

A

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

44
Q

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

A

Wider pelvis

45
Q

O&I Rectus femoris

A

• O: ilium
• I: patella

46
Q

O&I Vastus lateralis

A

• O: femur
• I: patella

47
Q

Largest quadriceps muscle

A

Vastus lateralis

48
Q

O&I Vastus intermedium’s

A

• O: femur
• I: patella

49
Q

Only quadriceps muscle that is not palpable

A

Vastus intermedius

50
Q

Central quad muscle

A

Rectus femoris

51
Q

O&I Vastus Medialis

A

• O: femur
• I: patella

52
Q

Hamstring muscles are primarily responsible for…

A

Knee flexion

53
Q

Location or hamstring

A

Posterior portion of thigh

54
Q

TF: Hamstring muscles are ANTAgonists to quadriceps at knee

A

True

55
Q

3 hamstring muscles

A

• Semimembranosus
• Semitendinosus
• Biceps femoris

56
Q

O&I Semimembranosus muscle and is under…

A

• O: ischium
• I: tibia
• Under semitendinosus

57
Q

O&I Semitendionsus muscle that is on top of…

A

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

58
Q

O&I Biceps femoris

A

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

59
Q

Most superficial of the hamstrings

A

Biceps femoris

60
Q

O&I Popliteus muscle

A

• O: femur
• I: tibia

61
Q

Agonists: Knee extension

A

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

62
Q

Agonists: knee flexion

A

• Biceps femoris
• Semitendinosus
• Semimembranosus

63
Q

Agonists: Knee internal rotation 3

A

• Semitendinosus
• Semimembranosus
• Popliteus

64
Q

Agonist: Knee external rotation 1

A

Biceps femoris

Kinesiology 3200 Principles of Human Movement (11 decks)

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