Spacers are an effective technique to reduce the side effects of prostate radiotherapy. They protect the rectum during radiotherapy treatment by moving it away from the prostate gland. Studies have shown that patients experience fewer bowel-related, urinary, and erectile dysfunction side effects and improved quality of life compared with those who don’t have a spacer inserted.

The absorbable spacer is injected during a simple one-off procedure and is gradually absorbed and eliminated naturally from the body through your urine.

Where fiducial markers are required, they may also be inserted at the same time as the spacer, but this will be discussed with you in advance. Find out more about fiducial markers. 

At GenesisCare we offer spacers at no extra cost to patients who haven't had their prostate removed and who are undergoing conventional radiotherapy for prostate cancer or prostate reirradiation on the MRIdian.

Spacers are not a clinical requirement for patients receiving prostate radiotherapy on the MRIdian over 5 days due to treatment accuracy, therefore the cost of a spacer is not covered by insurers. A self-pay spacer insertion is available on request. Find out more about the MRIdian here.

Spacer insertions are routinely performed under local anaesthetic at a number of our outpatient centres as a safe and convenient alternative to having the insertion under general anaesthetic within a hospital environment.

Insertions are also available as a day case procedure, performed by urologists within the GenesisCare network at a number of our national partner hospitals, located throughout the UK.

Your urologist will use a needle to insert the spacer between the prostate and the rectum. It is a minimally invasive procedure that takes around 30 minutes. The biodegradable spacer stays in position during your radiotherapy treatment cycle.

We accept referrals for patients receiving prostate radiotherapy treatment within GenesisCare network, or from patients just wishing to self-fund the spacer insertion.

The spacer pushes the rectum away from the prostate. This creates a protective gap that helps prevent damage to the rectum. The cancer cells can be accurately targeted while healthy organs and tissue are protected, reducing many side effects. The illustrations show the positioning of the spacer between the prostate and the rectum and the safe space created.