1 Basingstoke Knee Unit, Department of Trauma and Orthopaedics, Basingstoke and North Hampshire Hospital, Aldermaston Road, Basingstoke, UK. johndabis1@gmail.com.
2 Basingstoke Knee Unit, Department of Trauma and Orthopaedics, Basingstoke and North Hampshire Hospital, Aldermaston Road, Basingstoke, UK.
3 Elite Sports Medicine, Connecticut Children's Medical Center, Farmington, Connecticut, USA.
4 University of Connecticut School of Medicine, Farmington, Connecticut, USA.
5 Queen Anne Street Medical Centre, 18-22 Queen Anne Street, London, W1G 8HU, UK.
6 The Portland Hospital for Women and Children, 205-209, Great Portland Street, London, W1W 5AH, UK.