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PHTH 533 > Lecture 2 > Flashcards

Lecture 2 Flashcards

1
Q

Sagittal

A

flexion/extension

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2
Q

Frontal

A

abduction/adduction

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3
Q

Transverse

A

rotation

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4
Q

Kinematics

A

“displacement” or the motion of a segment without regard to forces

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5
Q

Degree of Freedom

A

the number of planes a joint can move across

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6
Q

Linear (Translational)

A

moving in one direction
- same distance, same direction, same time

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7
Q

Angular (Rotary)

A

motion around a central point (Axis)

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8
Q

Anatomical degree position

A

zero

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9
Q

Osteokinematics

A

the displacement of bones
- Rotary movement

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10
Q

Arthrokinematics

A

motion of joints
-thinking of loose pack & close pack positions

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11
Q

Loose pack

A

joint usually mid-range, near resting position
- Joint is least restraint to passive sliding

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12
Q

Close pack

A

joint at end ROM
-Joint has the greatest stability & most resistance to distraction

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13
Q

Concave surface

A

gliding in the same direction
ex: tibiofemoral flexion

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14
Q

Convex surface

A

gliding in the opposite direction
ex: shoulder abduction

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15
Q

Closed chain

A

Motion creates movement in one or more joints
- both segments are fixed = THINK OF Ground Reaction Forces

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16
Q

Open chain

A

motion can occur at one joint without causing movement in the another
- one segment is freely moving

17
Q

Stress

A

load or force

18
Q

Strain

A

“Displacement” amount of give (flex, bend, lengthening, deformation)
*DEFORMATION under load

19
Q

Living tissues response to stress

A

Cardiovascular system
Neurological system= can decrease quickly
Skeletal Muscle
Integument

1) Loss of connective tissue strength
2) Loss of proteoglycans
3) Irregular pattern of collagen cross linking

20
Q

Ligaments response to stress

A

at 6-9wks of immobilization we can see a 50% decrease in strength

21
Q

Tendons response to stress

A

Inactivity= loss of collagen & loss of vascularity “blood flow”
* Blood is needed for regeneration & healing

22
Q

Bone response to stress

A

a change in strength occurs based upon the quantity of mass present
*Osteoporosis=possible ailment

23
Q

Cartilage response to stress

A

-undergoes pressure necrosis when immobilized

24
Q

Stress- strain curve

A

the more load= the more tissue can deform

PHTH 533 (4 decks)

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