Week 5

Question 1

The very first angle at the beginning of stance phase is called the

Answer 1

Angle at initial contact

Question 2

The peak angle and the angle at initial contact can be the same angle

Answer 2

True

Question 3

Angular excursion is the total range of motion the joint moves in a specific direction

Answer 3

True

Question 4

Which of the following ankle kinematic patterns appear to be the most problematic in regards to running injury risk

Answer 4

Prolonged eversion

Question 5

Why is looking at the knee flexion angle at initial contact important during a running analysis

Answer 5

Too much knee extension at initial contact increases stress on the knee

Question 6

Which of the following is not a component of medial collapse

Answer 6

Hip abduction

Question 7

Running kinematics are generally very similar for males and females suffering from patellofemoral pain

Answer 7

False

Question 8

Landing with knee valgus during cutting is actually ok and not a risk factor for injury

Answer 8

False

Question 9

Which of the following is not a sign of bad jump landing biomechanics

Answer 9

Elevated hip flexion

Question 10

Which of the following is a hallmark of instability for any kinematic graph

Answer 10

Large and/or numerous spikes, dips and parabolas

Question 11

What tools are required for 3D motion capture

Answer 11

Calibration wand

Reflective markers

Cameras

Measuring device

Software/computer

Question 12

What 3 things have to be done for system calibration

Answer 12

Masking

Wave the wand

Set up origin

Question 13

What is masking

Answer 13

Getting rid of all the reflective points in lab

Question 14

Subject calibration depends upon

Answer 14

Anthropometrics

Marker set used

Stand in the middle of origin to take a picture

Question 15

What anthropometric measures are required in plug in gait

Answer 15

Leg length
Ankle width
Knee width
Height
Weight

Question 16

What is overstriding

What does it cause

Answer 16

When the knee is very extended and landing way out in front of center of mass

Increase force at the knee and can lead to injury

Question 17

What causes problems in runners

Answer 17

Prolonged eversion

Question 18

What does forefooot running cause

Answer 18

Increase force at the ankle

Question 19

What is medial collapse consist of

Answer 19

Knee valgus

Hip adduction

Hip internal rotation

Pelvic drop

Trunk lean

Question 20

On a graph that involves stance phase and the joint angle, where is:

Angle at initial contact
Angle at toe off
Peak angle

Answer 20

First data point

Last data point

Highest or lowest data point

Question 21

What is a peak angle

Answer 21

Most extreme angle

Question 22

What is angular excursion

Answer 22

Total range of motion the joint moves in a specific direction

Question 23

Is foot pronation (eversion) good for running

Answer 23

Eversion is actually good

But prolonged (high duration) is actually what is bad

Question 24

Prolonged eversion can lead to _____

Not related to _______

Answer 24

Achilles tendinopathy
and Medial tibial stress syndrome

NOT related to greater excursion, greater angle or greater velocity

Question 25

Female runners with patellofemoral pain show to have greater

Answer 25

Hip adduction, hip internal rotation and shank internal rotation And Less contra lateral trunk lean

Question 26

Males with patellofemoral pain showed to have greater Compared to healthy males Compared to females with PFP

Answer 26

Peak knee adduction, peak knee external adduction compared to healthy males Less peak hip adduction and greater knee adduction compared to females with PFP

Question 27

When is the ACL most stressed

Answer 27

When knee is placed in: Valgus position Femur is internally rotated on fixed tibia

Question 28

2/3 of ACL injury is due to

Answer 28

NON CONTACT

Question 29

Bad cutting mechanism include

Answer 29

Too much knee valgus Pelvic drop Hip adduction

Question 30

Good cutting mechanism includes

Answer 30

Hip abduction Small valgus Pelvis level

Question 31

What is the main way we fix an ACL

Answer 31

Motor relearning - teaching people how to cut

Question 32

Bad jump landing mechanism includes

Answer 32

Too much Valgus Too much Hip adduction Too much Pelvic drop Limited hip and knee flexion

Question 33

Overall what should we look out for in Running analysis

Answer 33

Ankle eversion Knee flexion Knee valgus Hip adduction Hip internal rotation

Question 34

Overall what should we look out for in Cutting analysis

Answer 34

Ankle eversion Knee flexion Knee valgus Hip adduction Hip internal rotation

Question 35

Overall what should we look out for in Jump landing analysis

Answer 35

Ankle eversion Knee valgus Hip adduction Knee flexion Hip flexion