Knee Region

Question 1

What type of joint is the knee joint?

Answer 1

Modified Hinge Joint

Question 2

How many DOF does the knee joint have?

Answer 2

2 DOF (Flexion, Extension)

Question 3

OPP of Knee Joint

Answer 3

25 degrees Flexion

Question 4

CPP of Knee Joint

Answer 4

Extension with ER of Tibia

Question 5

What type of joint is the patella?

Answer 5

Modified Plane Joint

Question 6

Functions of the Patella

Answer 6

Increases quad leverage
Protects the anterior portion of femur
Provides gliding mech for quads

Question 7

Facets of the Patella

Answer 7

Base
Apex
Medial
Lateral
Odd

Question 8

Patellar loading during walking

Answer 8

0.3 x BW

Question 9

Patellar loading during climbing the stairs

Answer 9

2.5 x BW

Question 10

Patellar loading during descending stairs

Answer 10

3.5 x BW

Question 11

Patellar loading during squats

Answer 11

7 x BW

Question 12

What is the screw home mechanism during OKC

Answer 12

During last 20 degrees of ext, Tibia will ER over Femur (OKTER)

Question 13

What is the screw home mechanism during CKC?

Answer 13

During last 20 degrees of ext, Femur will IR over the Tibia (CKFIR)

Question 14

What is attached to the Medial Meniscus?

Answer 14

ACL, MCL, and Semimem

Question 15

What is attached to the Lateral Meniscus?

Answer 15

PCL and Popliteus

Question 16

The functions of cruciate ligaments

Answer 16

Anteroposterior and rotary stabilizers

Question 17

OI of ACL

Answer 17

O: Ant. Spine of Intercondylar Eminence
I: Lateral Femoral Condyle

Question 18

OI of PCL

Answer 18

O: Post Spine of Intercondylar Eminence
I: Medial Femoral Condyle

Question 19

Orientation of ACL

Answer 19

Posterior, Lateral, Superior (PLS)

Question 20

Orientation of PCL

Answer 20

Superior, Anterior, Medial (SAM)

Question 21

Primary and Secondary Restraints of Anterior Translation

Answer 21

Primary: ACL
Secondary: MCL and LCL

Question 22

Primary and Secondary Restraints of Posterior Translation

Answer 22

Primary: PCL
Secondary: MCL and LCL

Question 23

Primary and Secondary Restraints of Valgus Force

Answer 23

Primary: MCL
Secondary: ACL and PCL

Question 24

Primary and Secondary Restraints of Varus Force

Answer 24

Primary: LCL
Secondary: ACL and PCL

Question 25

Genu Varum measurement

Answer 25

2 or more fingers can fit between the knees when ankles are together 4 cm or 1.6 inches

Question 26

Genu Valgum measurement

Answer 26

Knees touch and ankles do not 9 -10 cm or 3.5 to 4 in

Question 27

Genu Recurvatum

Answer 27

Hyperextended knee

Question 28

Lower patella

Answer 28

Patella Baja

Question 29

Higher Patella

Answer 29

Patella Alta

Question 30

Normal ROM for Knee flexion

Answer 30

0-135 degrees

Question 31

Normal ROM for Knee extension

Answer 31

0-15 degrees

Question 32

Normal ROM for IR of Tibia on Femur

Answer 32

0-20 to 30 degrees

Question 33

Normal ROM for ER of Tibian on Femur

Answer 33

0-30 to 40 degrees

Question 34

Affected Structures During Abduction Test (Knee Extended)

Answer 34

MCL ACL PCL POL PMC Semimembranosus Medial Quad Expansion

Question 35

Affected Structures During Abduction Test (20-30 degrees flexion)

Answer 35

MCL PCL POL PMC

Question 36

Affected Structures During Adduction Test (Knee Extended)

Answer 36

LCL ACL PCL PLC ITB Lat Gastrocnemius Arcuate-Popliteus Complex Biceps Fem Tendon

Question 37

Affected Structures During Adduction Test (20-30 degrees flexion)

Answer 37

LCL PLC ITB Biceps Fem Tendon Arcuate-Popliteus complex

Question 38

What do you call an audible snap or palpable jerk during pulling the tibia forward in Drawer's sign?

Answer 38

Finochietto Jumping Sign

Question 39

Tests for One Plane Anterior Instability

Answer 39

Active Drawer Test Drawer Test

Question 40

Tests for One Plane Medial Instability

Answer 40

Abduction (Valgus Stress Test)

Question 41

Tests for One Plane Lateral Instability

Answer 41

Adduction (Varus Stress) Test

Question 42

Functions of Meniscus

Answer 42

Lubrication Shock absorption Deepens tibial plateau

Question 43

Medial Meniscus

Answer 43

Deeper Less mobile Prone to injury Crescent-shaped Attached to ACL, MCL, Semimem

Question 44

Lateral Meniscus

Answer 44

Shallow More mobile O-shaped Attached to PCL and popliteus

Question 45

Valgus/Varus contact without rotation

Answer 45

Collateral ligament Patellar dislocation/subluxation

Question 46

Valgus/Varus contact with rotation

Answer 46

Collateral & Cruciates Meniscus tear

Question 47

Blow to tibial tubercle, or fall on flexed knee, foot plantar flexed

Answer 47

PCL injury

Question 48

Hyperextended knee with foot planted

Answer 48

PCL Injury

Question 49

Contact hyperextension

Answer 49

ACL injury ACL and PCL

Question 50

Non-contact hyperextension

Answer 50

ACL PCL

Question 51

Non-contact deceleration

Answer 51

ACL

Question 52

Non-contact deceleration with Tibia in IR

Answer 52

ACL

Question 53

Turning away with tibia in opposite direction

Answer 53

Patellar dislocation

Question 54

Compressive rotation

Answer 54

Meniscus

Question 55

Hyperflexion

Answer 55

Meniscus ACL

Question 56

Forced medial rotation

Answer 56

Lateral meniscus

Question 57

Forced lateral rotation

Answer 57

Medial meniscus MCL and PCL (possibly) Patellar dislocation

Question 58

Dashboard injury

Answer 58

Isolated PCL PCL and Posterior Capsule

Question 59

Genu Varum

Answer 59

Bowlegs 4 cm (1.6 in) between the knees when ankles are together

Question 60

Genu Valgum

Answer 60

Knock-knees Knees touch and ankles do not 9-10 cm (3.5-4 in) in between the ankles