THERAPEUTIC ULTRASOUND HIGH YIELD Flashcards
due to high frequency, US needs what?
coupling medium
what effects are made by sound wave application?
chemical, biologic, metabolic. thermal effect
thermal US is what type of heating modality, deep or superficial? at what depths?
deep
3 cm intra-muscular
1 cm below fat level
3 cm intra-muscular has what type of frequency?
1 MHz
1 cm below fat level has what type of frequency?
3 MHz
non thermal US is used for?
decreasing edema and cellular repair
what are the physiologic effects of US?
increased collagen extensibility increased metabolism of edema and exudate increased pain threshold increased histamine release increased nerve conduction velocities decreased joint stiffness decreased muscle spasm
what are the indications of US?
soft tissue injuries chronic connective tissue and joint dysfunction OA bursitis, tenosynovitis myositis ossificans nerve entrapment ganglia chronic sprains/strains muscle spasm
what are the contraindications of US?
cancerous lesions pregnancy over spine and brain fractures unfused epiphyseal site metal implants eyes, heart DVT tissue under radiation
what are the precautions of US?
bony prominence
decreased sensitivity
decreased circulation
what are the safety considerations?
crystal in the sounded works if not damaged
sound needs a medium to conduct the soundwave
what is the treatment protocol for US?
clean dry skin
apply coupling agent twice the size of the sound head
treatment time=5-10 min
high frequency means?
less depth (superficial)
lower frequency means?
deeper penetration
best absorption for direct US usage?
tendon ligament fascia joint capsule scar tissue
