Edinburgh Rugby can confirm that centre, Ben Cairns, will be unavailable for selection for at least 12 weeks following arthroscopic surgery on the knee he injured in the club’s pre-season friendly against Sale Sharks on Friday 19 August.The time taken has allowed a full assessment of Ben’s knee with the outcome of the investigative key-hole surgery a positive one, in that it revealed minimal damage to Ben’s anterior cruciate ligament (ACL), which would have required a more invasive operation and a longer period out of action.During this time, Ben will be reassessed regularly at the Spire Murrayfield Hospital and receive continuous rehabilitative support from the expert medical team at Edinburgh Rugby.