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What is low level laser therapy?

What is low level laser therapy?

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Low level laser therapy is a form of alternative medicine that uses laser light at low levels or near-infrared light. The light is applied to the surface skin of the body with the intentions of decreasing pain or inflammation, promoting healing of wounds, tissues, and nerves, or for preventing tissue damage. This is much different than the high level lasers that we know for surgical procedures to cut and destroy unhealthy tissue.

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What are the benefits of LLLT?

The three benefits of LLLT are it improves wound tissue regeneration, reduces inflammation and has an analgesic effect.

These three PDF files summarise the effects of LLLT and clinical benefits for:

Wound Healing
Sports injuries
Chronic Pain

 

How low level laser therapy Work?

Cold lasers are typically the size of a flashlight and are handheld devices that are used by the clinician. Usually the laser is placed directly over the injured area for approximately 30 seconds to several minutes. The treatment time refers to the size of the area being treated as well as the dose provided by the cold laser unit.

During the treatment, non-thermal photons of light which are emitted from the laser, pass through the different layers of skin: the dermis, the epidermis, and the fat tissue located under the skin known as the subcutaneous tissue.

This specific light is capable of penetrating 2 to 5 cm below the skin at 830nm or 90mw. Once the light energy reaches the target area after passing through the layers of the skin, it is absorbed and interacts with the light sensitive elements in the cell. This process is similar to photosynthesis in plants. When sunlight is absorbed by plants, it is then converted to usable energy and the plant can continue to grow.

Once the bodys cells absorb this light energy, a series of events in the cell becomes initiated. In theory, these events eventually result in reducing pain, increasing intracellular metabolism and reducing edema, inflammation and overall healing time, while normalizing injured or damaged tissue.

Cold laser therapy can stimulate all kinds of cell types such as: nerves, muscle, cartilage, ligament etc., therefore, a variety of conditions can be treated with cold laser therapy. Some of the specific issues that may be treated by cold laser therapy include: Carpal Tunnel Syndrome, Arthritis Pain, Neck Pain, Back Pain, Knee Pain, Tendonitis and Fibromyalgia Pain.

What low level laser therapy  are the contra-indications?
Eyes

THOR lasers have divergent beams but are potentially harmful if viewed directly from a distance of less than 1.1 meters. Patient, practitioner and observers should were THOR laser safety glasses when the laser is in use.

THOR LEDs are harmless and may even be helpful for some eye diseases when treated through closed eyes.
Relative contraindications / precautions
Cancer

Do not use LLLT over any known malignant lesions unless:

for pain relief during the terminal stages of the illness, but only with their physicians permission.
for cancer therapy side effects (e.g. oral mucositis, radiation dermatitis, etc), but only with their physicians permission.

Pregnancy

There is no evidence of harm to a an unborn baby however there are no safety tests either, so for medico legal reasons we recommend not treating directly over the developing foetus. It may be used on the pregnant woman for the treatment of back pain etc.
Thyroid

There is no evidence of harm and there is some evidence of benefit for treating hashimoto's thyroiditis with LLLT. As with many things in life too much of what is good for us may be be harmful and so it is conceivable that a high intensity laser treatment direct to the thyroid might (temporarily) stimulate (or inhibit) some thyroid activity. We suggest not applying lasers directly over the thyroid. The THOR LED treatments are however relatively low intensity and far less likely to trigger any adverse events when treating that region of the neck.
Tattoo

Treatment over a tattoo with higher irradiance laser may cause pain as the dye absorbs the laser energy and gets hot. If treatment is painful remove treatment probe from contact and treat ~15mm from surface of skin.
Hair on the head

Treatment on the head and neck with high irradiance laser may cause pain as the melanin in the fine superficial hair follicle absorbs a lot of the laser energy. If treatment is painful remove treatment probe from contact and treat ~15mm from surface of skin.
Very dark skin

Occasionally some people with very dark skin feel an unpleasant amount of heating. If treatment is painful remove treatment probe from contact and treat ~15mm from surface of skin.


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