6 Committee comments
6.1 The committee noted that a variety of materials have been used as biodegradable spacers. Some were not CE marked for this indication and so evidence on efficacy from studies of these spacers was not considered. Most of the evidence on CE‑marked spacers seen by the committee was on the use of hydrogel, with less evidence on the use of other materials.
6.2 The committee noted that spacers have been used with both external-beam radiotherapy and brachytherapy.