Sureshan Sivananthan, Specialist Registrar London Deanery, Lecturer, Institute of Orthopaedics, Oswestry, UK Eugene Sherry, Professor, Bond University Medical School, Queensland, Australia Patrick Warnke of Schonberger Landstr 61, D-24253, Muxall, Germany Mark D. Miller, MD, Professor of Orthopaedic Surgery, Head, University of Virginia, Charlottesville, USA