Approximately 800 knee operations are performed annually by Dr Erasmus himself. These procedures include knee arthroscopy, meniscus repair, cartilage surgery (microfracture, mosaicplasty, outogenous cartilage transplant), ligament repair and reconstruction, limb realignment (high tibial osteotomy, distal femoral osteotomy) unicondylar knee replacement, patellofemoral knee replacement, primary and revision total knee replacement. Conventional as well as computer assisted (CAS) techniques are used.