Hydrogel

What is hydrogel?

Hydrogel is a gel-like substance that is implanted between the prostate and rectum in a minimally invasive procedure by a urologist. At Icon, we use a hydrogel known as SpaceOAR Hydrogel. SpaceOAR stands for Space Organs At Risk, as it protects the rectum during radiotherapy treatment of prostate cancer to reduce the risk of potential side effects.

As the rectum and prostate are very close and separated by only a small space, the rectum can be affected by radiation to the prostate. SpaceOAR Hydrogel moves the rectal wall away from the prostate, protecting the rectum from being damaged during treatment.

SpaceOAR Hydrogel is made from a soft gel-like synthetic material that mostly consists of water and can be safely used in the body. Following treatment, the SpaceOAR Hydrogel liquefies and is naturally absorbed and excreted by the kidneys within six months.

Minimising side effects

Although radiation therapy is effective in treating prostate cancer, the risk of side effects remain. The major organ at risk (OAR) of radiation therapy to the prostate is the rectum, which sits directly below the prostate gland. The injection of SpaceOAR temporarily moves the rectal wall away from the prostate during radiation therapy. Studies have shown that patients injected with SpaceOAR prior to their radiation therapy treatment experience less rectal pain, urinary incontinence and late rectal toxicity, and increased sexual quality of life, compared to those treated without SpaceOAR.^1,2

Is SpaceOAR safe?

SpaceOAR can be safely used in the body. It is made from two liquids that when combined form a soft gel-like synthetic material which mostly consists of water and is biodegradable. The material used in SpaceOAR is also used in other implants such as surgical sealants used on the eye, brain and spine.³ The hydrogel remains in place during the course of radiation therapy and following treatment, liquefies and is naturally absorbed by the patient’s body within six months.³ For more information, visit the SpaceOAR website.

The procedure

SpaceOAR is injected by a urologist in a short procedure, typically taking less than one hour.

Further information

For further information on whether SpaceOAR may be suitable for you, please contact the Bowen Icon Cancer Centre team on (04) 896 0200 or by emailing admin.bowen@oncnz.team.