Week 1-Goniometry ROM Flashcards
what FOR is used commonly when remediation is likely?
biomechanical
what is the biomechanical FOR focused on?
physical components e.g. movement, sensation and strength, required to perform an occupation
when do we use the rehabilitative FOR?
when remediation may occur but
considers compensatory
what is biomechanics advantage (MA)?
Measure of efficiency
what are force systems?
push or pull of one object on another
what are examples of external force systems?
gravity, weight in hand
what are examples of internal force systems?
muscles
what is an effort force?
force that causes rotation of the
lever
what is a resistance force?
force opposing
rotation of the lever
what is an eccentric motion?
Active muscle is lengthening, thus it is acting as the resistance
force
what is a concentric motion?
Active muscle is shortening, thus it is acting as the effort force
what is an isometric motion?
No shortening or lengthening of the active muscle(s)
what is Centre of gravity in terms of the human body?
hypothetical point
around which the force of gravity
appears to act
where is centre of gravity in anatomical position?
S2 BUT will
change since we frequently change our body positions
what is centre of mass?
Gravity is predictable and usually
constant; therefore, the Center of
Mass (CoM) = CoG
what is the line of gravity?
straight line
through the CoG toward the center of
earth (downward from the body)
what is the base of support?
Area beneath an object or person
providing support
what helps us when our centre of gravity is outside the base of support?
muscles & muscle endurance
how can CoG can be displaced?
By an external force
applied to the body, as
occurs during contact
sports
By external movement of
the support surface, as
occurs when we sit or
stand in a moving vehicle
During performance of
activities requiring self-
initiated movement of the
head, limbs, or trunk
what does inability to maintain balance in posturally threatening
situations results in?
maladaptive strategies
how is motion described in terms of location?
provides the anatomical description of the plane in which joint motion occurs, and the axis around which it occurs
Transverse (horizontal), frontal/coronal(A-P), sagittal (L-R) *often a combination in the human body, thus for descriptive purposes we refer to the anatomic position
how is motion described in terms of direction?
Described again in anatomic terms: flexion, extension, abduction,
adduction, medial and lateral rotation
how is motion described in terms of magnitude?
“quantity” of rotatory motion (Active, Active-assisted, or Passive);
measured in degrees
what is friction?
resistance of movement
between one surface or
object and another
potentially exists
whenever two objects
make contact
what is muscle tone?
a continuous sub maximal contraction that
maintains a small degree of tension in a muscle; keeps the
muscle in a state of readiness for active contraction
what happens if a muscle detaches from its insertion?
it shortens
what other instances will cause muscle to shorten?
if positioned and held in a
posture that is shortened from its “neutral” resting position
what is elastic maximum?
a muscle/tendon unit only has a certain amount of elasticity and
can only respond to a certain amount of stretch (stress) at one time before it breaks down
