Joints, Ligaments & Muscles of Knee

Question 0

Patellofemoral joint open and closed pack

Answer 0

O: Full knee extension
C: Full knee flexion

Question 1

Tibiofemoral joint open & closed pack

Answer 1

Open: 25 degrees
Closed: full extension and lateral rotation of tibia

Question 2

Patella increases mechanical advantage of quads by:

Answer 2

Increases quads moment arm

Question 3

> 5 degrees of knee hyperextension is known as

Answer 3

Genu recurvatum

Question 4

Screw home mechanism open and closed chain description

Answer 4

Open: ER of tibia on femur at end range knee extension
Closed: IR of femoral surface on tibia at end range knee extension

Question 5

Normal Q angle is _____ and formed by:

Answer 5

13 - 19 degrees

Measured by ASIS line to middle of patella and middle patella to tib tub

Question 6

Is a condition in which the tib tub bc more pronounced at an older age

Answer 6

Osgoodslaughter

Question 7

This ligament prevents tibia moving fwd and femur from moving bkwd

Answer 7

Anterior cruciate ligament

Question 8

This ligament prevents tibia moving bkwd and femur moving fwd

Answer 8

posterior cruciate ligament

Question 9

This knee ligament is more commonly injured

Answer 9

ACL more commonly injured, usually more commonly injured in females, usually noncontact injury - cutting, land flat on heels

Question 10

This force stresses the MCL

Answer 10

Valgus

Question 11

This force places stress on the LCL

Answer 11

Varus

Question 12

LCL attaches to

Answer 12

lateral condyle of femur and fibular head

Question 13

This meniscus is torn more frequently

Answer 13

Medial

Question 14

How many bursae att knee

Answer 14

13

Question 15

These three muscles attach to Pes Anserine

Answer 15

Sartorius, Gracilis, Semi-tendinosus

Question 16

These two tendons are frequently used for autographs to repair ACL

Answer 16

Semitendinosus and Gracilis

Question 17

N & NR Rectus Femoris

Answer 17

Femoral Nerve; L2, L3, L4

Question 18

O, N & NR for Vastus Lateralis

Answer 18

O: Linea Aspera
N: Femoral Nerve
NR: L2, L3, L4

Question 19

This muscle fires most at end range knee extension

Answer 19

Vastus Medialis

Question 20

O, N & NR Vastus Medialis

Answer 20

O: Linear Aspera
N: Femoral Nerve
NR: L2, L3, L4

Question 21

O, N, NR of Vastus Intermedialis

Answer 21

O: Anterior femur
N: Femoral nerve
NR: L2, L3, L4

Question 22

I, N, NR of Semi-membranosus

Answer 22

I: Posterior surface of medial condyle of tibia
N: Sciatic Nerve
NR: L5, S1, S2

Question 23

N & NR of Semitendinosus

Answer 23

N: Sciatic Nerve
NR: L5, S1, S2

Question 24

O, N & NR of short head Biceps Femoris

Answer 24

O: Lateral lip of linea aspera N: Common Peroneal Nerve NR: L5, S1, S2, S3

Question 25

N & NR of Biceps Femoris

Answer 25

N: Sciatic nerve NR: L5, S1, S2, S3

Question 26

This muscle unlocks the knee

Answer 26

Popliteus

Question 27

The popliteus unlocks the knee how?

Answer 27

external rotation

Question 28

N, NR of Popliteus

Answer 28

N: Tibial Nerve NR: L4, L5, S1

Question 29

O, I, A, of Popliteus

Answer 29

O: Lateral condyle of femur I: Posterior medial condyle of tibia A: initiates knee flexion

Question 30

This muscle can help hold knee in extension if pt does not have quad function

Answer 30

Gastrocnemius

Question 31

Muscle contributes to lateral stability

Answer 31

TFL

Question 32

These two muscles contribute to medial stability

Answer 32

Gracilis & Sartorius

Question 33

These two muscles provide posterior stability - both medially and laterally

Answer 33

Gastroc & Hamstrings

Question 34

Provides anterior stability to knee

Answer 34

Quads

Question 35

Knocking knees

Answer 35

Genu Valgum

Question 36

Genu varum

Answer 36

bowleged

Question 37

Terrible Triad

Answer 37

ACL, MCL, Medial Mensicus

Question 38

Pronounced tib-tub

Answer 38

Osgood-Schlatter disease

Question 39

Patellofemoral pain syndrome

Answer 39

happens in younger people; athletes: knee may give way unexpectedly: usually result of roughening, overuse,: felt when knee bent,