Team Wales Director of Operations, David Evans said:
"We are disappointed to lose Lee from the Team Wales line-up for the Melbourne Games but we wish him a speedy recovery and best wishes for the remainder of his season with the Ospreys. He has however been replaced by a player who has demonstrated his extraordinary talent during his rugby career to date and Robin will be a real asset to the 7s team when it takes to the field next month."
Melbourne's Telstra Dome will play host to the sevens scrum-down on March 16-17 and the Welsh contingent - spearheaded by coach Dai Rees- has been pitched into Pool A with New Zealand - the defending Commonwealth champions who won their sixth IRB Sevens title last season. Kenya and Namibia make up the remaining spaces in the pool.