Quiz 2 Flashcards
how is the PSFS implemented?
the patient is asked to name at least 3 activities that they are struggling with and would like to get back to and rate their ability to perform each on a scale of 0 (unable to perform) to 10 (able to perform at pre-injury level)
average score is taken out of a possible 10
the PSFS is valid, reliable, and responsive in populations with…
knee dysfunction
cervical radiculopathy
acute LBP
mechanical back pain
neck dysfunction
what is the MDC of the PSFS?
1.0-2.5 PSFS points
neck dysfunction, knee dysfunction, cervical radiculopathy, chronic LBP, and COPD
what is the MCID of the PSFS?
spinal stenosis: 1.34
UE musculoskeletal: 1.2
what are the goals of body mechanics?
protection and jt conservation
lower COM = ____ stability
greater
larger BOS = ____ stability
greater
legs are _________ spine is ____________
source of force, means of force transfer
is pushing or pulling easier on the lumbar spine?
pushing
bending forward pushes spinal disc material _____
posteriorly
bending backward pushes spinal disc material _____
anteriorly
does bending forward or backward help take pressure off the foramina?
bending backward
what is proper stand to sit position?
legs touch chair
descend by leading w/ buttocks and lowering legs
sit toward front to middle of chair (don’t aim for back)
slide back
use arm to assist
what is proper sit to stand mechanics?
slide forward in chair
feet under thighs
use arms to push is able
lead with head
don’t flex neck
maintain lumbar lordosis
push up with legs
what are proper body mechanics when going down to lift something?
position body close to object
wide BOS
knee flexion and move hips posteriorly w/straight spine
what are proper body mechanics when coming up to lift something?
keep object close to body
engage core
don’t hold breath
lead with head
push up with legs
legs are source of force, spine is means of force transfer
when pushing and pulling use ____ leg/arm(s)
both
what is ergonomics?
the science and practice of sitting and designing jobs and workplaces to match the capabilities and limitations of the human body
what is the purpose of ergonomics?
to help prevent injury
reduce fatigue and discomfort
increase productivity
improve quality of work
improve job satisfaction
what is a work site analysis?
assessing for job demands and correcting ergonomics
what items are on the ergonomics checklist?
posture
force
repetitions
vibration
temperatures
repetitive reach items on a desk should be within how many inches?
13-18 inches
occasionally reach items on a desk should be within how many inches?
21-26 inches
at what level should the computer monitor be?
at eye level
arms should be positioned ____ to the floor when seated
parallel
how should feet be positioned when seated?
flat on the floor
what are the postural requirements?
must be energy efficient
must minimalize stress to the musculoskeletal system
must focus on function
what is static posture?
erect, bipedal stance in humans
what is the basis for understanding dynamic posture?
static posture
when are you susceptible to muscle fatigue, altered blood flow, and perturbations?
in static posture
what type of posture requires low energy and minimal muscle activity?
static posture
what is BOS?
the area from the heels to toes and foot to foot
where is the COM/COG located in static posture?
anterior to S2
how many degree is postural sway in the sagittal plane?
12 deg (6 front, 6 back)
how many degrees is postural sway in the frontal plane?
16 deg (8 to each side)
posture is a ____ not a ____
activity, position
what is posture?
a dynamic and complex interaction between a variety of body systems
what is postural control?
the ability to maintain stability of the body and body segments in response to forces that threaten to disturb the body’s structural equilibrium
t/f: postural control requires precise function from a variety of body systems
true!
what is COG/COM?
the point on a structure from which gravity exerts its force
what is LOG?
vector that runs vertically from COG and determines the location of gravitational forces acting on the body
is the LOG within or outside the BOS in standing?
within
is the LOG within or outside the BOS in motion?
outside
what is center of pressure (COP)? where is it located?
center of distributed forces
b/w the feet in bipedal stance and within foot in single leg stance
what is the point at which the ground rxn forces are acting?
COP
in erect standing the GRF ___LOG
=
the horizontal distance b/w ___ and ___ determines the need for additional support
LOG, GRF
ideal posture is determined by ___
LOG
where is the LOG in relation to the ankle?
4-6 cm anterior
where is the LOG in relation to the knee
anterior
where is the LOG in relation to the hip?
posterior
what is normal pelvic tilt (ASIS-PSIS angle)?
12 deg
what is normal sacral inclination?
30-40 degrees
what is normal lumbar lordosis?
20-70 deg
where is the apex of the lumbar lordosis?
L3/L4
what is normal thoracic kyphosis?
20-50 deg
what is normal cervical lordosis?
20-30 deg
where does the LOG fall in relation to the ear?
along the tragus of the ear
what are common postural deviations?
weakened thoracic extensors
increased thoracic kyphosis
possible reduced lumbar lordosis
tightened pecs
what is flat back posture?
mild thoracic kyphosis and forward head
LOG posterior to the hips
post hip tilt
flexed lumbar spine
weakened thoracic muscles
tight pecs
potentially weakened hip flexors
what is the kypho-lordotic posture?
axis for knees and ankles is too anterior
anterior pelvic tilt
increased lumbar lordosis and thoracic kyphosis
forward neck flexion in cervical spine
weak glutes and back extensors
what is swayback posture?
very forward head
posterior pelvic tilt
decreased lumbar lordosis
what is scoliosis?
frontal plane alignment deviation
scoliosis creates an abnormal ____ curve of the spine
lateral
what is a common cause of scoliosis?
leg length discrepansy
what is structural scoliosis?
changes in the skeletal system
what is functional scoliosis?
curve caused by a changeable reason
what is compensated scoliosis?
C7 and S1/2 are lined up w/curve in b/w
what is uncompensated scoliosis?
C7 and S1/2 aren’t lined up
what do you look at/for in a scoliosis check?
rib hump, arm spaces, pelvic angle, spinal curve, and scap heights