Purpose: There is great interest recently,among Orthopaedic surgeons about Minimally Invasive Surgery (MIS) in knee arthroplasty.We present a retrospective,randomized review of 50 patients,who had their knees replaced during a period of a year and show our experience in indications,surgical technique,early results and comparison to conventional surgery.

Method: Using regional anaestesia and an incision of about 9cm (7–11cm), the components are placed without patellar eversion.We briefly describe regional anatomy in relation to surgical technique.We compare early results using MIS to standard procedure,regarding pain,function and rehabilitation and describe pros and cons of the method.

Results: Early results show faster recovery time, less post-operative pain and effusion and quicker return to normal activities.There were no skin problems. 96% of the knees that recieved MIS had good to excellent KSS and KS scoring Systems score.We certainly need longer results and better experience because the method is technically challenging. Smaller surgical tools are also needed in order the technique becomes better and easier for the surgeon.