Specialist Orthopaedic Consultant in Computer Aided Hip and Knee Surgery MBBS, B.Med,Sci (Hons), MSc, DIC, FRCS (Tr& Orth) Arjuna Imbuldeniya (known as Arj to friends and colleagues) is a fully qualified and trained surgeon who specialises exclusively in treating patients suffering from complex hip and knee problems using cutting edge technology and up to date, proven and precise techniques.