Often used method. Many use a sand like material (eg silicon dioxide; petroleum distillate) in canvas tubes (hydrocollator pacs). Packs come in different sizes to fit different body parts. Packs are usually kept in thermostatically controlled containers or heated in a microwave oven.
Soft tissue injury; local muscle spasm; contusions.
Methods of application:
Pack is heated to about 65 degrees in water – drain excess water apply to patient, seperated with towels for 20 – 30 minutes; layers of towels can be reduced to maintain skin temperature