Therapeutic Use and Effect of Local Heat and Cold

Many different modalities used in physical therapy plan of treatment local heat or local cold is on of this modalities, It was used from long years , The therapeutic uses of heat is know as thermotherapy while the therapeutic uses of cold is know as cryotherapy

A- Local Heat

1- Hot Packs

kept at 70-75 C , requires 2 hours for initial heat and 30 min between uses

Advantage : 

easily , inexpensive
short time required
safe , and there is different shapes

2- Paraffin Paths

The temp of Paraffin Paths 45 - 50 C

Advantage :

maintain good contact,
easily , inexpensive
the part can be elevated

3- Fluidotherapy 

the temp is controlled its dry heating agent that transfers heat by convection

Effect and uses of heat
A- Effect

1- Increase blood flow, application of heat causes Vasodilation ( dilation of capillary )
2- Reduction of muscle spasm and relaxation of muscle contraction
3- heat causes increase extensibility of soft tissues ( stretching )

B- Uses

1- Pain control
2- Increase Rang of motion (ROM)
3- Acceleration of healing

Contraindication of use heat 

1- Avoid use heat in Acute injury or Inflammation or muscle strain

2- Avoid use heat in hemorrhage cases or over an open wounds or burn
3- Avoid use heat in poor sensation cases
4- Avoid use heat in cases of Thrombosis

B- local cold 

1- Cold Packs

temp 0-5 C
duration : 10-15 min, can be repeated after 1-2 hours

Advantage

easy, inexpensive
cover large area of body
can be applied with elevated

2- Ice Massage

Advantage

inexpensive
can be observed during treatment
can be use for small or large area of body

Effect and uses of Cold

A- Effect

1- initial decrease of blood flow then increase in blood flow ( Vasoconstrection then Vasodilation )
2- increase pain threshold and decrease sensation of pain
3- decrease spasticity
4- facilitation of muscle contraction

B- Uses

1- inflammation , acute injury control
2- Edema control by decrease intravascular fluid pressure and increase blood viscosity After trauma using ice with compression and elevation
3- Pain control
4- symptom management in multiple sclerosis

Contraindication of use cold
1- cold hypersensitivity
2- cold intolerance
3- over an area with peripheral vascular disease
4- over an area with circulatory compromise
5- over regenerating peripheral nerve