Cryotherapy

Cryotherapy is the local or general use of low temperatures in medical therapy or the removal of heat from a body part. The term "cryotherapy" comes from the Greek cryo (κρυο) meaning cold and the word therapy (θεραπεια) meaning cure. It has been around since the 1880-1890s.

Its goal is to decrease cellular metabolism, increase cellular survival, decrease inflammation, decrease pain and spasm, promote vasoconstriction, and when using extreme temperatures, to destroy cells by crystallizing the cytosol. The most prominent use of the term refers to the surgical treatment, specifically known as cryosurgery. Other therapies that use the term are cryogenic chamber therapy and ice pack therapy.

Cryosurgery

Cryosurgery is the application of extreme cold to destroy abnormal or diseased tissue. Cryotherapy is used to treat a number of diseases and disorders, most especially skin conditions like warts, moles, skin tags and solar keratoses. Liquid nitrogen is usually used to freeze the tissues at the cellular level. The procedure is used often because of its efficacy and low rates of side effects.

Hilotherapy

Hilotherapy is a treatment, which allows the controlled application of cooling to selected areas of the face and body. A cuff is wrapped around the traumatized area, which is connected to the device that allows the traumatized area to be cooled at a specific temperature. The difference between Hilotherapy and other cryotherapy approaches is the range of temperature and the constant application. By controlling the temperature between 10°C and 20°C, the typical benefits from cryotherapy occur, such as immediate vasoconstriction with reflexive vasodilation, decreased local metabolism and enzymatic activity, and decreased oxygen demand. However, by not reducing below 10°C, the lymphatic drainage is not disturbed, nor is the creation of fibroblasts and the Microcirculation, all of which cease to function during the normal application of ICE and when the tissue falls below the 10°C. Hilotherapy is commonly used for the recovery of orthopedic surgery, plastic surgery and Oral and maxillofacial surgery.

Ice pack therapy

Ice pack therapy is a treatment of cold temperatures to an injured area of the body. An ice pack is placed over an injured area and is intended to absorb heat of a closed traumatic or edematous injury by using conduction to transfer thermal energy. The physiologic effects of cold application include immediate vasoconstriction with reflexive vasodilation, decreased local metabolism and enzymatic activity, and decreased oxygen demand. Cold decreases muscle spindle fiber activity and slows nerve conduction velocity, therefore it is often used to decrease spasticity and muscle guarding. It is commonly used to alleviate the pain of minor injuries.

Cryogenic chamber therapy

Cryogenic chamber therapy is a treatment whereby the patient is placed in a cryogenic chamber for a short duration (i.e. no more than three minutes, which is comparable to ice swimming), and if used properly, will not destroy tissue. Whole body cryotherapy originated in Japan in 1880. However, it was a group of Polish scientists who took the idea and made whole body cryotherapy the physical therapy it is today. The Olympic rehabilitation centre in Spala, Poland opened in May 2000 and has been used as a training and injury rehabilitation centre for many sporting bodies.

The chamber is cooled, typically with liquid nitrogen, to a temperature of −120 °C (−184 °F). The patient is protected from acute frostbite with socks, gloves and mouth and ear protection, but in addition to that, wears nothing but a bathing suit. The patient spends a few minutes in the chamber. During treatment the average skin temperature drops to 12 °C (54 °F), while the coldest skin temperature can be 5 °C (41 °F). The core body temperature remains unchanged during the treatment, however it may drop slightly afterwards. Therapy triggers the release of endorphines which induce analgesia (immediate pain relief).

Patients report that the experience is invigorating and improves a variety of conditions such as psychological stress, insomnia, rheumatism, muscle and joint pain, fibromyalgia, itching, and psoriasis. The immediate effect of skin cooling and analgesia lasts for 5 minutes, but the release of endorphines can have a lasting effect, where the pains and signs of inflammation as found in blood tests remain suppressed for weeks. The effects of extreme cold and endorphine release are scientifically studied. Curiously, some patients compare the feeling to sauna at 110 °C (230 °F).^{[citation needed]}

Cryotherapy and Headaches

A study published in the September 2000 edition of the Archives of Family Medicine showed that a combination of pressure and cold temperatures can successfully mitigate headaches related pain and also decrease the duration of a headache ^[1]. Eighty-seven percent of participants (p=.004)said that the combination of pressure as well as temperature therapy was "optimally effective"; 13% said that the temperature therapy was "moderately effective". Many products exist that provide temperature therapy, many times cryotherapy, to combat headaches. One such product is marketed as SootheAway, a product that combines thermotherapy with cryotherapy to relieve migraine and headache pain. This could be this article dated Vol. 9 No. 9, September 2000

References

eMedicine.com - Dermatology - Cryotherapy
Simo Syrjäläinen, Huippukylmähoitoa Haikossa. [1]
Westerlund, Oksa, Smolander, Mikkelsson. Huippukylmäaltistuksen vaikutus iho-, ja syvälämpötiloihin terveillä henkilöillä. [2]

^ "Pressure, Heat and Cold Help Relieve Headache Pain". Retrieved 2010/07/21. {{cite web}}: Check date values in: |accessdate= (help)

External links

Cryotherapy at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
Hilotherapy, a more effective alternative to Ice
A training course in Cryotherapy (IARC Screening Group)

[1] "Pressure, Heat and Cold Help Relieve Headache Pain". Retrieved 2010/07/21. {{cite web}}: Check date values in: |accessdate= (help)

[1]