Lecture 1 Flashcards
(31 cards)
Salience of activity
The activity needs to matter to the patient, they may not want to certain things so activity must be relevant and easily perceived
Those with high ____/____ have better outcomes in physical therapy
self esteem self efficacy
Useful education techniques (5)
- pace information provided (one improvement at a time)
- provide feedback
- perform activities in as realistic setting as possible
- encourage patient’s questions and comments
- practice recall of information
_____ replaces compliance
adherence
A push/pull that creates an action of one body upon another
force
Goal of PT
create enough of the right kinds of forces to accomplish a task in the safest, most effective, and most efficient manner possible
Center of mass =
location on body?
what can affect center of mass
balance point
just anterior to S2
lack of limb, heavy cast
Force couple act together to …..
move an object about a pivot point
Tension is pulling ….
pulling on each end of a surface or attempting to stretch/ lengthen a tissue
Compression
pushing two surfaces together
Axial compression
compressive force that is directed along the long axis of a structre
Distraction
pulling that tries to seperate two forces
Shear
two forces opposite in direction that are parallel to contacting surfaces (ex femur and tibia)
Torsion
Twisting force about a structures long axis
Bending
pushing a load forward that bends around a pivot point creating tension and compression
Combined loading
a combination of more that one type of loading
Too little load is often due to
or possibly
- Immobilization or decreased activity
- muscle atrophy, bone loss
Too much load can be due to (2)
- single episode in which force exceeds tissue ability to accommodate it
- small repeated force that damages tissue
For promotion of STABILITY
-BOS
-line of gravity
-distance between COM and BOS is:
-COM is
-BOS: greater in area
-line of gravity acting on the object’s COM is at or near the center of the BOS
- distance between COM and BOS is shortened
-COM is lower and closer to BOS
For promotion of MOBILITY
-BOS
-line of gravity
-distance between COM and BOS is:
-BOS: smaller in area
-line of gravity is allowed to move beyond the center of the BOS
-distance of the COM above the BOS is greater
Newton’s 1st law
what is inertia
(intertia: the resistance to initiation of or change to motion)
- object at rest stays at rest, object in motion stays in motion unless acted on
Newton’s 2nd law (3)
-Force = mass x acceleration
-use momentum to decrease force required to accomplish a motion
-increasing time to lesson the effect of stopping a force (gymnast landing w knees bent)
Class 1 lever
the pivot lies between (middle) the load and the effort
(head and neck or see saw)
Newton’s 3rd law
for every action there is an equal and opposite reaction