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277 Cards in this Set

  • Front
  • Back

Cryotherapy

use surface of cryoagents to lower soft tissue temp

Cryotherapy rationale

treatment of acute/subacute soft tissue


Hemostatic and inflammatory phases of tissue repair


manage pain/spasticity due to effects on peripheral nerves

Cryotherapy based on what?

heat absorption


heat transfer: heat withdrawn from soft tissue

subcutaneous fat effect on cryotherapy

acts as barrier for heat transfer due to thermal conductivity


modify parameters for pt based on subcutaneous fat layer

Therapeutic effects/indications of cryotherapy

vasocontriction


decreased blood flow


decreased cell metabolism


decreased edema


decreased pain


decreased muscle spasticity

Optimal therapeutic temp window for cryotherapy

50-60 degrees

Cryotherapy overall indications

moderate - substantiated

Cryotherapy TKA indications

strong, conflicting

Cryotherapy post op musculoskeletal conditions indications

strong, substantiated

cryotherapy ankle sprain indcations

moderate, substantiated

cryotherapy spasticity indications

moderate, substantiated

cryotherapy joint/tendon/muscle condition indications

moderate, substantiated

cryotherapy arthritic/rheumatoid condition indications

moderate, substantiated

Qualitative dosimetry for cryotherapy

CBAN - cold, burning, achey, numbness

quantitative dosimetry for cryotherapy

Dose = Tag-Ts (45 F)

what should be coupled with cryotherapy

wet towels - protects from germs - but does not absorb cold

screening tests to do before cryotherapy

skin thermal discrimination test


cold urticaria


nail bed test


blood pressure - before and after


skin fold test

contraindications for cryotherapy

Big 5


cold induced urticaria


raynaud's disease


cryoglobulinemia


paroxysmal cold hemoglobinuria


wounds


PVD

Thermotherapy

application of heat over skin for heating soft tissues

types of thermotherapy

most heat packs


paraffin bath


fluidotherapy

Thermotherapy rationale

increase temp over large areas (MHP)


increase tissue temp over difficult to reach areas (paraffin)

4 modes of heat transfer

conduction


convection


conversion


radiation

specific heat

capacity of a substance to store heat

thermal conductivity

capacity of substance to conduct heat

Optimal thermal window

104-113 F

Why is the optimal thermal window where it is

below 104 - desired results not acheived


above 113 - too hot and cell death occurs

Indications for thermotherapy

RA/OA


Neck/back/shoulder pain

overall evidence for thermotherapy indications

moderate, substantiated

Quantitative Dosimetry for thermotherapy

Dose = Tag - Ts (44 F warmer than skin temp)

Moist heat pack dosimetric factors

- size of pack


- temp difference btwn agent/skin


- application duration


- coupling thickness

skin sensory discrimination testing

give to assess pt. ability to perceive thermal stimuli


warm and hot test tubes

Contraindications for all physical agents

Big 5


pregnancy


malignancy


impaired mentation


impaired sensation


electronic implants

contraindications for thermotherapy

Big 5


thrombophlebitic areas


hemorrhagic areas


acute/severly inflammed areas

risks for thermotherapy

over area of impaired circulation


cardiac insufficiency


wounds


superficial metal


systemic infectious disease


hand fine motor

dosimetry for paraffin bath

temp 113-122 F - because it has lower specific heat and lower conductivity

Ultrasound foudation

use of mechanical acoustic/sound energy to treat pathological soft tissues, dermal wounds, bones, or transfer of ion into tissues

Ultrasound rationale

mechanical energy transmitted to induce deep/localized thermal and mechanical effects in pathological soft tissues

where is ultrasound most effective

tissues rich in protein - tendons/ligaments


minimal effect on overlying skin

Biophysical characteristics of ultrasound

- electric current passes over crystal


- crystal expands and compresses


- produces mechanical pressure waves


- waves travel through medium (gel) to biological tissues

effective radiating area of ultrasound

area of transducer where US energy radiates


because crystal does not vibrate uniformly, ERA smaller than area of treatment head

spatial peak intensity

peak intensity of US output over area of transducer. usually greatest in the center of beam, lowest at edge

spatial average intensity

average intensity of US output over area of transducer

beam nonuniformity ration - BNR

ratio of spatial peak intensity to spatial avg intensity


- usually between 5:1 and 6:1

Thermal effects/indications of ultrasound

acoustic energy absorbed


microvibration at high frequency


microfriction


increase kinetic energy


heat

mechanical effects/indications of ultrasound

stable cavitation


microstraming

Attenuation coefficient

ability of tissue to absorb US energy

order of tissue absorption of US energy

Bone > cartilage > tendon > skin > muscle

indications of ultrasound

Moderate, conflicting

what is US used on?

myofascial pain


heating of tendon pathologies


adhesive capsulitis

Dosimetry of US

frequency - based on depth of tissue


1-3.3 MHz


1 MHz deeper penetration - due to longer wavelength

What is delivery mode of US based on?

amount of thermal effect you are trying to achieve


- continuous


- pulsed

Coupling mediums of US

Gel


Water


Medium pressure

Application techniques of US

Dynamic


Hot spots

Heating speed of tissues w/ US

Superficial tissue heat quick than deep tissue

How long do deep tissues require to heat?

10 minutes

Intensities for heating deep tissue, US

>1.0

Intensities for heating superficial tissue, US

<1.0

Indication for Non-thermal dose of US

Acute injury- don't want to heat swelling

Indication for mild thermal (1 C increase) dose of US

Subacute injury

Indication for moderate thermal (2-3 C increase) dose of US

chronic inflammation, pain, trigger points

Indication for vigorous thermal (4 C increase) does of US

Stretch Collagen

Frequency for .5 intensity

1MHz - .04 C/ min


3 MHz - .3 C/min

frequency for 1.0 intensity

1 MHz - .2C


3 MHz - .6 C

frequency for 1.5 intensity

1 MHz - .3 C/min


3 MHz - .9 C/ming

frequency for 2.0 intensity

1 MHz - .4 C/min


3 MHz - .1.4 C/min

application intensity to heat deep muscle using US

freq - 1 MHz


100% duty cycle


1.5 W/Cm2


13 minutes for vigorous heating

heating a tendon with US

can heat less due to higher protein levels/vascularity

Application intensity to heat superficial muscle with US

freq - 3 MHz


100% duty cycle


.5-1.0 W/cm2


7-13 minutes

Clinical window for muscle after US heating

3.3 minute window

Clinical window for tendon/ligament after US heating

5 minute window

Contraindications for US

Hemorrhagic area


ischemic area


thrombosis


infected lesion


GONADS


EYES


PELVIS OF MENSTRUATING WOMEN


SPINAL CORD AFTER LAMINECTOMY


PLASTIC/CEMENT IMPLANTS

US risks

Epiphyseal growth plates


<6 months post radiotherapy

HVPC foundation

Use electrical current to aid in soft tissue repair/healing

HVPC Rationale

treatment of slow to heal chronic wounds in aging population. HVPC can mimic body's bioelectric system and accelerate wound healing process

HVPC Waveform

twin peak monophasic pulse

HVPC voltage

150-500 V

HVPC pulse duration

short 100-200 microseconds, fixed by manufacturer

HVPC pulse frequency

1-200 pps

Why does HVPC have an effect on wounds?

injured tissues leak ions out of their cells, causing wound area to be positively charged relatively

Galvanotaxis

process of specific cells (neutrophils, macrophages, lymphocytes, and fibroblasts) being attracted to injured healing area by electrical charge

Cells attracted to wound in inflammatory phase and charge

macrophages


neutrophils


(negative charge)

HVPC which electrode would be placed near wound in inflammatory phase?

anode (+)

cells attracted to wound in proliferative phase and charge?

fibroblasts


(positive charge)

which electrode should be placed near wound in proliferative phase?

cathode (-)

types of cell attracted to wound in remodeling/maturation phase and charge?

keratinocytes


epidermal


(positive charge)

which electrode should be placed near wound in remodeling/maturation phase?

Cathode (-)

Germicidal evidence of HVPC

- limited, but stated that passing electric current will induce germicidal effect


- inhibits growth of microorganisms

length of HVPC stimulation

30 minutes to 2 hours

Therapeutic effects of HVPC on edema

conflicting

therapeutic effects of HVPC on decreasing Pelvic Floor Muscle spasm

supported - not specific to HVPC

Therapeutic effects not supported for HVPC

DOMS


Increased muscle strength/blood flow

Evidence for HVPC in decrease pain

supported due to gate theory


NOT RECOMMENDED DUE TO CHARGE BUILDUP

Indications of HVPC on dermal wounds

moderate, substantiate

HVPC frequency

1-200 Hz

HVPC amplitude

150-500 V (Comfortable level)

HVPC polarity

anodal for inflammatory


cathodal for everything else

HVPC treatment duration

30-90 mins. 1-3x per day

HVPC contraindications

Osteomyelitis


CA


electronic/metallic implants


anterior cervical


thoracic area


cranial area


ab/pelvis/lumbar of pregnant pt.


Hemorrhages

HVPC risks

Cross contamination


Universal precautions

HVPC application of electrode in or around wound

treatment electrode, saline soaked gauze directly in wound covered with foil or single pt. use attached to wire with clip

HVPC application of electrode away from wound

dispersive electrode placed close to wound site to ensure current delivery through wound

interferential foundation

low-frequency, amplitude modulated ES current from interference caused by crossing 2 or more medium frequency AC w/ different freq.


PRODUCES BEAT EFFECT

interferential used as whaT?

electroanalgesic (gate theory)

interferential goal

deeper penetration - more comfortable

interferential used for whaT?

pain control primarily


muscle re-education of pelvic floor

interferential waveform

superimposition of 2 sinusoidal AC of med. freq.

how is beat created in interferential?

medium frequencies cross and created low-frequency current - waves negate each other as they cross


beat frequency is the difference between the 2 carrier frequencies

Quadrapolar technique interferential?

4 electrodes - 2 crossing currents


creates 4 leaf clover shaped field

Quadrapolar technique Vector scan in interferential ?

more dynamic effect

creates more of a circular shaped field to enlarge treatment area


interferential stereodynamic technique?

6 electrodes make 3 crossing currents


3D field


Not commonly seen clinically

interferential bipolar technique (Premodulated)?

2 electrodes - 2 crossing currents


currents cross inside device - not tissues


modulated current delivered through one channel

what is interferential bipolar technique used to treat?

smaller areas

Indications for inferential therapy

Moderate, substantiated


Pain - Gate theory


Pelvic floor strengthening


bowel dysfunction

Inferential pain frequency

frequency in BPS


pre-set for 80-150 bps


similar to tens

inferential frequency rationale

High rate/frequency


Preferentially stim sensory fibers (large A-beta)


Close dorsal horn gate

Inferential pain duration

15-30 minutes

Inferential dosimetry for muscle strengthening and spasm reduction

1-10 bps for edema management


10-100 bps for muscle rehabilitation

Contraindications of Inferential

Big 5


transcervical/thoracic


hemorrhagic area


ARTERIAL/VENOUS THROMBUS


CONTRAINDICATED ACTIVE MOTION - MOTOR


same as TENS



Iontophoresis foundation

use of electrical current to transfer ionized medication/substances through skin to target tissue

Iontophoresis Rationale

use DC to deliver ionized substances to skin

Why would Iontophoresis be used?

pt unable to tolerate oral medications


pt do not want needle injection

Electromigration

movement of ions across the skin

Polarity of electrode for iontophoresis

same charge as the druge in its ionic form - like charges repel

Electrode labeling of iontophoresis

Active, treatment - therapeutic ions are placed


Dispersive, Non-treatment - return electrode, mandatory, closes electrical circuit

Drug substance penetration depth iontophoresis

Reservoir of medication of epidermis


Passive diffusion to dermis


Localized blood flow

Phoretic effects of ionto

transfer of ions through stratum corneum

electrolytic effects of ionto

electrolysis at electrode sites

pharmocologic effects of ionto

relates directly to the specific pharmaceutical content of ionic drug used

what are physiological events under anode in ionto

Cl- ions attracted to positive anode


reaction of Cl- ions w/ water leads to weak hydrochloric acid


reaction is sclerotic, can harden skin

what are physiological event under cathode in ionto

Na+ attracted to negative cathode


reaction of sodium w/ water leads to stronger sodium hydroxide base


stronger alkaline reaction is scleryotic, softens skin, which can raise burn potential



Traditional delivery of ionto

constant current type electrical device creating continuous monophasic current waveform (DC) w/ peak amp. of 5 mA

Monophasic waveform negative reactions

unwanted electochemical reaction


pH instability

Buffering caused by ionto

electrolysis-induced pH changes at skin/electrode interface: impregnation of buffering agent into pad covering drug resevoir


Control current density

Indications for ionto

Moderate and substantiated


Hyperhidrosis


Rheumatoid d/o


Epicondylitis


Peyronie's disease


TMJ


Calcifying tendinitis

4 factors for ionto dosimetry

drug ions


polarity


concentration/volume of ionic solution


dose used

Dose equation for ionto

dose = mA x min

current density

amount of current amplitude applied against the electrode conductive surface area

current density equation

CD = A (mA) / S (cm2)

max current density under cathode (ionto)

.5 mA/cm2

max current density under anode (ionto)

1.0 mA/cm2

ionto contraindications

open skin

temporal/orbicular areas


sensitivity/allergy to drug ions


electronic implants



ionto risks

skin irritation/burns


presence of flammable sprays/solution


over skin w/ impaired sensation


recently shaved skin

ionto steps of application

ID target tissue


ID active electrode


saturate active electrode with medication


place on target tissue


select appropriate CD


slowly increase amplitude

Neuromuscular electrical stimulation (NMES) foundation

use pulsed electrical currents applied to skeletal muscle to elecit a motor response to preserve/restore muscle function

Types of currents used in NMES

Biphasic, pulsed


Russian


Interferential

NMES rationale

provide practitioners alternate muscle strengthening method that mimics voluntary training methods for those unable to perform contraction

effects of NMES

improve motor unit recruitment


induce muscle hypertrophy

how does NMES strengthen muscles

depolarizes motor nerve


rapid repolarization


refractory period

difference between motor recruitment in NMES and physiologic

NMES recruits largest fibers that innervate larger, fast twitch muscle fibers and recruit small, slow twitch fibers nest


Physiological contractions recruit slow twitch fibers first

what is caused by the difference in motor recruitment btwn NMES and physiologic contraction

quicker fatigue, more recovery time btwn contractions


NMES contractions rapid and jerky, while physiologic contractions are smooth

NMES indications

Moderate, substantiated


for quad weakness


IFC pelvic floor weakness, bowel dysfunction, pain

NMES dosimetry pulse frequency

30-60 pps (mean of 50)

NMES dosimetry for pulse duration

150-350 microseconds

NMES dosimetry for amplitude

strong, but tolerable - higher amplitude means more motor units contracted

On:off ratio for NMES

1:5 to 1:3, 1:1

Ramp up for NMES pulse

.5-2 seconds

NMES duty cycle

10 secs on, 50 secs off

Electrode placement in NMES

over motor point and peripheral nerve

Overload principle of NMES

muscle must be overloaded to hypertrophy. strength only improves with overloading.

Specificity theory of NMES

E-stim causes larger, fast twitch muscles to contract before smaller fibers, which produces more force. Therefore, e-stim should be able to produce greater strength gains than exercise alone with same force contractions (Russian protocol)

contraindications of NMES

ant cervical


thoracic/cranial area


rate resp. pacemakers


1st trimester preg woman (ab, pelvis, lumbar)


over metal implants


epilepsy


hemorrhagic areas


CA


damaged skin

NMES risks

contact dermatitis


SWD


fainting, nausea, skin rashes, swelling, pain


muscle damage



recommended pulse freq. for NMES Russian

2500 Hz continuous sine wave, burst modulated for 10 ms w/ 50 pulses per second

recommended pulse duration for NMES Russian

400 microsecs - each sine wave cycle equaling 200 microsecs per phase

Recommended amplitude and on/off time for NMES Russian

Amplitude: to tolerance


On/off: 10:50

Recommended Ramp/treatment time and times/day to do NMES Russian

Ramp: not disclosed


Treatment time: 10-20 mins to produce 10-20 contractions


times/day: once

Recommended parameter settings for NMES muscle strengthening


-Pulse freq/duration


-amp


-on/off time


-ratio


- ramp/treatment time


- times/day

frequency - 35-80pps


duration - 150-200 microsecs (small m) 200-350 microsecs (large m)


Amp - >10% of MVIC injured, >50% in uninjured


On/Off - 6-10 secs : 50-120 secs


Ratio - 1:5 initially, may reduce over time


Ramp time: 2 secs


treatment time: 10-20 mins for 10-20 reps


Times/day: every 2-3 hours

NMES Muscle re-ed. (FES) pulse freq/duration, amplitude

freq: 35-50 pps


duration: 150-200 small muscles, 200-350 large muscles


amplitude: sufficient for functional activity

NMES muscle re-ed on/off times, ration, ramp time

on/off - depends on functional activity


ratio - depends on functional activity


ramp time - at least 2 secs

NMES muscle re-ed treatment time, times/day

treatment time - depends on functional activity


times/day - N/A

NMES Muscle spasm redux pulse freq/duration, amplitude

freq - 35-50 pps


duration - 150-200 microsecs (small muscles), 200-350 (large muscles)


amplitude - to visible contraction

NMES muscle spasm redux on/off times, ratio, ramp time

on/off times - 2-5 sec off


ratio - equal on/off times


ramp time - at least 1 sec

NMES muscle spasm treatment time, times/day

treatment time - 10-30 min


times/day - every 2-3 hours until spasm relieved

NMES edema redux pulse freq/duration, amplitude

freq - 30-60 pps


duration - 100-200 microsecs (small m), 200-600 microsecs (large m)


amplitude - to visible contraction

NMES edema redux on/off times, ratio, ramp time

on/off time - 2-5 sec off


ratio - equal on/off time


ramp time - at least 1 sec

NMES edema redux treatment time, times/day

treatment time - 30 mins


times/day - twice per day

Foundation of TENS therapy

use of electrical current (pulsed, biphasic) to stim peripheral nerves to produce ELECTROANALGESIA

Purpose of TENS therapy

pain management

TENS Rationale

option for management of pain other than med or surgery


Non-invasive, no side effects, less expensive

TENS Waveform

biphasic, pulsed current


Modulated, pulse/burst

A-beta fibers

mechanosensistive

A-delta fibers

nociceptive

C-fibers

Nociceptive

Gate system

Gate to brain may be open or closed in spinal cord, one sensory impulse at a time

Opiate system

human body pain modulation system

level which opiate system operates

supraspinal

what is involved in opiate system

neuroendocrine activity from subcortical areas (periaqueductal gray matter/nucleus raphe magnus)

How do we open gate in TENS?

preferential depolarization of A-delta & C-fibers


negative fdbk loop, T-cell inhibition

TENS strong, substantiated indications

Postop ab pain


Labor/post labor pain


postop thoracic pain


OA pain


Dysmennorrheal pain


post op ortho pain

TENS moderate, substantiated indications

LBP


neurogenic pain


chronic pain syndroms


stump/phantom pain


RA pain


orofascial pain

Types of TENS dosimetry

convential (high rate)


acupuncture (low rate)


brief intense


burst


modulation

Convential TENS dosimetry

sensory level


- short duration, high freq


- comfortable pins and needles


preferential depolarization of large diameter A-beta fibers


Close gate


Rapid Analgesi

Acupuncture like TENS therapy dosimetry

Motor stim


- preferential depol of A-beta fibers AND motor fibers


- tingling and motor contraction to stim DEOS


- Onset of analgesia is slow, but sustained for long period

Brief Intense TENS therapy dosimetry

High amp capable of noxious stim


- brief due to duration of application being brief


- somewhat painful


- tingling, motor contraction, strong motor contraction, max tolerable pain


- onset of analgesia rapid, sustained for long period

what is brief intense TENS dosimetry painful

preferential depolarization of A-beta, motor fibers A-delta AND c-delta

TENS burst mode dosimetry

delivery of bursts of pulses instead of single pulse


(otherwise same as acupuncture- like)

Modulation mode TENS dosimety

Random modulation of pulse duration, freq, and amp


difficult to state exact mechanism for pain modulation

TENS Duration of application

30 mins - 3 hours

How do you choose mode for TENS therapy?

change based on effectiveness on analgesia

Contraindications for TENS Therapy

pacemaker (especially new ones)


defibrillators


contact dermatitis


ant. cervical


thoracic/cranial


ab/lumbar/pelvic area of pregnant woman


epilepsy


hemorrhagic area


CA


damaged skin


impaired mentation

where are electrodes placed in TENS therapy

Over pain


surround pain


over trigger point


over acupuncture point


2 or 4 electrodes

Conventional TENS Pulse freq/duration/amplitude

Freq - 100-150 pps


Duration - 50-100 microsecs


Amp - to produce tingling

Conventional TENS modulation, treatment time

Modulation - use if possible


Treatment time - 3 hours, multiple time over day, remove unit for skin checks once every 8 hrs.

When does conventional TENS control pain?

only during stimulation

What is likely the mechanism of action of Conventional tens?

closes gate at spinal cord level

TENS acupuncture like Pulse freq, duration, amp

Freq - 2-10 pps


duration - 100-300 micros


amp - to visible contraction

TENS acupuncture like modulation, treatment time

modulation - none


treatment time - 30 minutes

Likely mechanism of action in TENS acupuncture like therapy

opening gate, DEOS system, endorphins

traction foundation

to provide mechanical distraction to spinal structures, including joint surfaces

traction rationale

provide passive spinal elongation and increase intervertebral space

what is traction used for

decrease compression forces on disc/peripheral nerve tissues

what is mechanical energy for in traction

intension is separation of vertebrae

what is the steps of tensile forces in traction

take up slack


elongate soft tissues


cause joint separation

how must tensile forces be applied in traction, why?

slow, low level force, consistent. reflexic muscular contraction may happen if too sudden

where is forces placed?

first muscles, then ligaments, then capsule, then IV disc

What is purpose of removing force from IV disc?

if outer layer of disc is ruptured and nucleus pulposus is bulging, removing force will draw pulposus back in

modes of traction

static


intermittent

Therapeutic effects/indications of traction

reduce disc protrusion


stretch soft tissue structures


relax muscles


mobilize joints


relieve pain


centralize symptoms


prepare pt. for active therapy

Moderate, substantiated indications for traction

disc bulge


nerve root impingment


joint hypermobility


subacute joint inflammation


paraspinal muscle spasm


central/lateral stenosis


DJD

Force dosimetry for traction

large enough to overcome weight, friction, gravity acting on spinal segments

Force needed for cervical traction

10-30% body wt

force needed for lumbar traction

30-60% body weight

traction angle dosimetry

0-30 angle of pull


more facet joint separation in 0 degree pull

traction duration dosimetry

10-30 minutes

contraindications of traction

Big 5


CONTRAINDICATED MOTION


acute injury/inflammation


spinal cord compression


vertebral artery occlusion


peripheralization of symptoms with traction


uncontrolled hypertension


pregnancy/breastfeeding

structural diseases affecting spine to contraindicate traction

tumor


infection


RA


osteoporosis


prolonged steroid use


spinal cord stenosis


spondylo

When is pressure of traction belt hazardous

pregnancy


hiatal hernia


vascular compromise


osteoporosis


TMJ

Yellow flags of traction

Displacement of annular fragment


medial disc protrusion


severe pain fully relieved by traction


claustrophobia


pt who can tolerate prone/supine


disorientation


dentures

what is Diathermy (SWD)

electromagnetic agent carrying nrg to soft tissues - absorbed as heat

SWD theoretical rationale

use of electrotherapeutic agent capable of DEEP HEAT over LARGE SURFACE AREA of soft tissues, minimally heats superficial tissues

what is required for movement of waves

no medium - travel through vacuum of space @ speed of light

how is SWD described

wavelength (Peak to peak distance)

Frequency (cycles per sec)

frequency characteristics of SWD

radio frequency

non-ionizing radiant energy


MOST common (27.12 MHz)


SWDD tuning

happens when biological tissues oscilllate at same freq as device circuit

Type of waves for SWD

alternate from + to -

Thermal effects of SWD

heat increases kinetic NRG of tissues

Athermal effects of SWD

hypothetical - improves ATP production and growth factor

Two modes of application for SWD

pulsed


continuous

Pulsed SWD

on/off time


use when athermal effects desired

continuous SWD

use when thermal effects desired

two methods of SWD

capacitive


inductive

capacitive SWD

use of 2 capacitive metal electrode producing electrical field in patient



when is capacitive SWD recommended

treatment of superficial soft tissues


mostly absorbed by tissues with high electrical impedence (fat)

Inductive SWD

use of single inductive coil type electrode wrapped around a treated body segment


produces magnetic field in pt. perpendicular to coil

when is inductive SWD used

for treatment of deeper tissues - mostly absorbed by tissue with high water content

SWD dosimetry

qualitative (1-4 scale from pt)


quantitative (total EM NRG to tissues)

SWD Duration

15-20 minutes

SWD indications

moderate, substantiated for OA and ankle sprain

SWD contraindicaitons

big 5


metal, implanted electrical devices


pacemakers


eyes, testes


growing epiphyses of growing children


acute injury/inflammation


recent/potential hemorrhage


thrombophlebitis

SWD precautionss

follow instructions


other pts. must be at least 15 ft away


adequate toweling

SWD screenings

sensation


mentation


circulation


metal in/on pt.


skin sensory discriminatory test



SWD adverse effects

burns


fire

SWD set up

remove clothing from treatment area


remove metal


postition pt.


inquire pain level

SWD pt should feel

warming sensation


post - ask from subjective pain level

SWD documentation

mode/method


electrode placement


pre/post modality measures


qualitative scale


quantitative


pt. reaction

low level last therapy (LLLT)

use of monochromatic light therapy within visible or infared wavelengths of EMS, used to alter cell behavior w/out heating tissue

fundamental biophysical properties of LLLT

monochromatic (all photons must have same wavelength)


collimated (not divergent)


coherent (all waves move in phase w/ each other)


EMS Spectrum - 100 nm - 1 mm

LLLT types

gaseous HeNE


GaAs/GaAlAs semiconductor or diode lasers

LLLT treatment needs

active medium


resonance chamber


energy source

HeNe Laser

active medium is He & Ne mixture


resonance chamber - glass tube with mirrors on end


energy source - electric current

Biophysical characteristics of LLLT

resting/ground state


pumping and population inversion


spontaneous emission


stimulated emission

how does a diode laser work

electrons cross junction, photons released at specific wavelength


resonance chamber is gap in junction btwn semiconductor material


energy source - electrical current

cellular effects of LLLT

stim macrophages


increase ATP production


stimulate fibroblasts/increase collagen


altered nerve conduction


vasodilation

clinical effects of LLLT

wound/fracture healing


musculoskeletal disorders


pain management


*more research needed

Laser penetration

absorption


scatter/disperse/transmission through tissue


reflection/bounces off

HeNe direct effect penetration

first .5 cm of tissue

GaAs/GaAlAs penetration

direct effect: first 2-5 cm


indirect effect: 1-5 cm

LLLT indications

wound/ulcer management


pain management of local/systemic disorders

LLLT contraindications

over eye and neoplastic lesion


over ab of pregnant women


over hemorrhagic region/heart


over vagus n./sympathetic region of cardiac pt


over photosensitive skin and infected areas


over bone epiphyseal regions

LLLT application

with hand held or cluster probe


contact or no contact


manual gridding


manual or auto scanning

LLLT dosimetry

based on power, power density, NRG density

LLLT mode

pulsed or continuous

LLLT superficial treatment

HeNe Laser

LLLT deep treatment

semiconductor laser

How large should the treatment area be for LLLT treatment

handheld: <3 cm2


cluster probe: >3 cm2

Documentation for LLLT

type of laser


power output (mW)


probe/beam type and surface area


mode of delivery (cont. or pulsed)


Method


therapeutic dose/NRG density


total treatment surface area


total irradiation time

methods of LLLT

direct contact


non contact


gritting


manual scan


auto scan