Week 3

Question 1

What is 1 gait cycle

Answer 1

Heel strike of 1 foot to heel strike of the same foot

Question 2

During walking, stance phase is

Answer 2

60% of gait cycle

Is when the foot is in contact with the ground

Question 3

During walking, swing phase is

Answer 3

40% of gait cycle

Is when the foot is not contacting the ground

Question 4

Double limb support in walking makes up

Answer 4

20%

Question 5

Single limb support in walking makes up

Answer 5

80%

Question 6

A step is

Answer 6

heel strike on 1 side to heel strike on opposite side

Question 7

A stride is

Answer 7

Right and left step (1 gait cycle)

Question 8

Step width is measured from

Answer 8

The middle of the foot (2nd toe)

Question 9

Someone who has a larger than average step width and shorter than average step and stride length indicates what

Answer 9

The person is trying to improve their base support

Maybe due to weak hips or lack of stability

Question 10

What are the technical considerations of 2D motion analysis

Answer 10

Camera position - plane, tilt and field of view

Camera image quality

Frame rate - minimum 30 Hz

Question 11

Anatomical position is

Answer 11

The standard reference position

Question 12

Joint angles (clinical angles) are

Answer 12

Zero in anatomical position

Question 13

The absolute angle is

Answer 13

almost never the clinical angle

Question 14

Frontal plane angles involve what type of movements

Answer 14

Inversion

Eversion

Abduction

Adduction

Question 15

Angle at initial contact is

Answer 15

The very first angle when the foot first touches the ground

Question 16

Peak angle is

Answer 16

The most extreme angle

Question 17

How do you get “normal data”

Answer 17

Published in literature

Collect your own data and find the average

Use a program with normative data built in

Question 18

During walking, heel strike of one limb to heel strike of the other (contralateral) limb is called a ___________

Answer 18

Step

Question 19

Swing phase comprises what percentage of the gait cycle

Answer 19

40%

Question 20

Only one limb is in contact with the ground (as opposed to both limbs) for approximately what percentage of the gait cycle

Answer 20

80%

Question 21

At the end of swing phase, your leg decelerates before the next heelstrike

Answer 21

True

Question 22

Step width is the horizontal distance from the outside edge of the left foot to the outside edge of the right foot during one step

Answer 22

False

Question 23

What is generally considered the minimum acceptable frame rate for 2D motion analysis? (Hint: this is the frame rate most of you used during lab)

Answer 23

30 frames/sec

Question 24

More often than not, the absolute angle you measure between segments during 2D motion analysis is also the clinical angle

Answer 24

False

Question 25

How can you tell if a patient’s kinematic gait data is “normal”

Answer 25

Collect a bunch of data on healthy individuals, yourself and find the average

Fancy program that has normative data programmed into it

Compare data to what is in the literature

Question 26

If an individual feels unstable during walking, their gait may be characterized by

Answer 26

Shorter and wider steps

Question 27

The frontal plane hip angle (hip ab/adduction) is measured in reference to a 90-degree angle between the pelvis and thigh

Answer 27

True