About SpaceOAR™ Hydrogel

A little space before prostate radiation can make a big difference after.

In a clinical trial, patients who underwent prostate cancer radiation therapy with SpaceOAR Hydrogel experienced fewer clinically significant declines in bowel, urinary and sexual functions than patients without SpaceOAR Hydrogel.1–3

MORE space

SpaceOAR Hydrogel illustration. SpaceOAR Hydrogel illustration.

means FEWER

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Bowel Complications

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Bladder Complications

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Sexual Complications

Which leads to a BETTER QUALITY OF LIFE*

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*After radiotherapy was complete, control patients experienced a clinically significant decline in bowel, urinary and sexual quality of life 8 times more often than SpaceOAR Hydrogel patients.3,4

Sanford J. Siegel, MD, FACS.

“If I was going to have radiation...I was going to have SpaceOAR”


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Doctor and patient consultation.

More than 220,000 patients worldwide have been treated with SpaceOAR Hydrogel.*1

Download a discussion guide to help you talk to your doctor about whether SpaceOAR Hydrogel is right for you.

Download a Discussion Guide

Finding a SpaceOAR Hydrogel Doctor Near You is Simple

Get started by entering your ZIP code below and click submit. You will be redirected to a map view showing you the nearest doctors to your location.
*Please note, there may be other doctors in your area who treat prostate cancer not listed here.

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Have more questions? We can help.

Sign up to receive more information about SpaceOAR Hydrogel. Our patient education team can provide you with details about how SpaceOAR Hydrogel works, what to ask your doctor and how to find a doctor in your area.

Are you a physician looking for more information? Please click here.

*Number of patients is based on units shipped and a BSC proprietary algorithm.

1. Data on file with Boston Scientific.
2. Mariados N, Sylvester J, Shah D, et al. Hydrogel spacer prospective multicenter randomized controlled pivotal trial: Dosimetric and clinical effects of perirectal spacer application in men undergoing prostate image guided intensity modulated radiation therapy. Int J Radiat Oncol Biol Phys. 2015 Aug 1;92(5):971—7.
3. Hamstra DA, Mariados N, Sylvester J, et al. Continued benefit to rectal separation for prostate radiation therapy: Final results of a phase III trial. Int J Radiat Oncol Biol Phys. 2017 Apr 1;97(5):976—85.
4. Hamstra D, Shah D, Kurtzman S, et al. Evaluation of sexual function on a randomized trial of a prostate rectal spacer. J Clin Oncol. 2017 February 20;35(Suppl 6):69.

Caution: U.S. Federal law restricts this device to sale by or on the order of a physician.

Results from case studies are not necessarily predictive of results in other cases. Results in other cases may vary.

SpaceOAR Hydrogel is intended to temporarily move the rectal wall away from the prostate during the course of radiotherapy treatment for prostate cancer, and in creating this space it is the intent of SpaceOAR Hydrogel to reduce the radiation dose affecting the rectum.

SpaceOAR Hydrogel contains polyethylene glycol (PEG). 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 injection, pain or discomfort from the hydrogel, site inflammation, infection (including abscess), inability to urinate, urgent need to urinate, constipation, rectal muscle spasm, damage to lining of rectum, ulcers, fistula (a hole between rectum and bladder, urethra, or skin below the scrotum), perforation (hole in prostate, bladder, urethra, rectum), necrosis (dead tissue), allergic reaction (local reaction or more severe reaction, such as anaphylaxis), embolism (blood vessel blockage is possible and may happen outside of the pelvis, potentially impacting vital organs or legs), fainting, and bleeding. Please talk to your doctor about the risks and benefits related to using SpaceOAR Hydrogel. If one or more of these complications occur, you may need medical treatment or surgery. URO-1288805-AA

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© 2023 Boston Scientific Corporation or its affiliates. All rights reserved. URO-747201-AB JAN 2023