template/form/control/radio.html
<div {$attributes}>
{Radio}{rows}{row}
<div class="field"><div class="ui checkbox radio {$disabledClass}">
<input id="{$_id}_input" type="radio" name="{$_name}" value="{$value}" {$checked} {$disabled}>
<label for="{$_id}_input">{$name}</label>
</div></div>
{/row}{/rows}{/}
<label>{$Content}</label></div>