Orthopaedic medical device

This present invention provides an orthopaedic medical device, in particular an arthroscopic aid, for stimulating the release of cells and/or encouraging migration of cells to a surgical siteor an injury site. The invention includes, methods of increasing a cell population at a surgical siteor injury, a method of improving surgical outcome of synovial joint procedures and methods of delivering intra-operative minimally manipulated cells to a synovial joint.