Cryotherapy is a therapy that is used just as heat is used in the rehabilitation of injuries. This therapy is often used for fever reduction, pain relief, control bleeding, decrease in muscle spasm, prevention or reduction of edema from trauma and inflammation and reduction of spasticity. Cold is generally applied during the first 24 to 48 hours after an injury. Applying cold first usually results in a decrease in fluid filtration into the tissue interstitium, a decrease in metabolic rate and decrease in inflammation and pain.

This therapy is used to treat conditions like:
A recent Injury
Osteoarthritis
Strains
Gout
Muscle spasm
Tendinitis, or irritation in the Tendons
Early acute injury and inflammation
Fever reduction
Spastic conditions
Oedematous conditions
Emergency care for burns
Limited ROM secondary pain