Rectal spacers are temporary, biodegradable water-based implants used during radiation therapy for prostate cancer.

They’re a great way to create space between the prostate and the rectal tissue, reducing the radiation dose delivered to the rectum. This can help reduce side effects such as diarrhoea and other altered bowel symptoms, both during radiotherapy and in the longer term after it.

While rectal spacers are helpful for many patients undergoing radiotherapy, they’re not right for everyone.

• Placing them is an invasive procedure that you may wish to avoid.
• Previous treatments may mean they’re not a good idea for you.
• There may be other good clinical reasons not to have them.

Because MR-Linac is very accurate, if you’re being treated with it there’s also no need for rectal spacers. Your consultant will take the time to understand your situation and offer a personalised approach to deliver the best outcomes for you.