The SpaceOAR Procedure

If you’ve been diagnosed with prostate cancer and will be undergoing treatment, the SpaceOAR Hydrogel procedure is a pre-treatment option that can help minimize the potential side effects of radiation therapy.

Watch the Video to See How the SpaceOAR Procedure is Performed

SpaceOAR Procedure FAQ

SpaceOAR Hydrogel can be implanted as an outpatient procedure in a hospital, surgery center, outpatient clinic or doctor’s office prior to the start of radiation treatment. It is typically not a lengthy procedure.

The SpaceOAR Hydrogel is injected as liquid through a needle inserted between the rectum and the prostate. Your doctor will use ultrasound imaging to ensure correct placement.

Your doctor will give you instructions on how to prepare for the procedure and information about any anesthesia you will receive.

SpaceOAR Hydrogel can be implanted under local, regional or general anesthesia. You should discuss with your doctor which type of anesthesia will work best for you.

Your doctor will use a local, regional or general anesthesia and the injection site will be numbed, so you may feel a pinprick or pressure but should not feel any discomfort. Following the implantation, you may experience some temporary discomfort at the injection site. SpaceOAR Hydrogel patients typically report no prolonged discomfort from the implanted gel.1

You should be able to go back to your normal activities soon. Check with your doctor about anything you should avoid after the procedure and during your radiation treatments.

SpaceOAR Hydrogel stays in place, separating your prostate and rectum, for about 3 months. After about 6 months, the hydrogel is naturally absorbed into the body and removed in your urine.

SpaceOAR Hydrogel is an FDA-cleared implant made of two liquids that when combined, form a soft gel-like synthetic material predominately made of water. The Hydrogel is highly absorbent, containing over 90% water, and is made with the same FDA-cleared material used in other surgical sealants such as the eye, brain and spine.

Over 50,000 patients have been treated with SpaceOAR Hydrogel and it is used by leading cancer centers around the world.2

As with any medical treatment, there are some risks involved with the use of SpaceOAR Hydrogel. Potential complications associated with SpaceOAR Hydrogel include, but are not limited to: pain associated with SpaceOAR Hydrogel injection; pain or discomfort associated with SpaceOAR Hydrogel; needle penetration of the bladder, prostate, rectal wall, rectum or urethra; injection of SpaceOAR Hydrogel into the bladder, prostate, rectal wall, rectum or urethra; local inflammatory reactions; infection; injection of air, fluid or SpaceOAR Hydrogel intravascularly; urinary retention; rectal mucosal damage, ulcers, necrosis; bleeding; constipation; and rectal urgency. Please talk with your doctor about the risks and benefits associated with the SpaceOAR Hydrogel.

The SpaceOAR treatment is not a medical process that needs to be feared in any way, there’s no pain involved, there is very little impact on a person’s lifestyle or even on the day that they have the treatment.
*Individual patient experience may vary


To determine if SpaceOAR Hydrogel is right for you, consult your healthcare team. This guide can help facilitate a conversation with your doctor.

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2 Data on file with Boston Scientific.