1 Department of Orthopaedics, North Cumbria Integrated Care NHS Foundation Trust, Newtown Road, Carlisle, Cumbria, UK. mattydknee@icloud.com.
2 Department of Orthopaedics and Traumatology, Institute of Movement and Locomotion, St Marguerite Hospital, Aix Marseille Univ, APHM, CNRS, ISM, 279 Boulevard Sainte Marguerite, BP 29, 13274, Marseille, France.
3 Orthopaedic Surgery Service, University Hospital of Geneva, Geneva, Switzerland.
4 , 11 rue Jacques Boyceau, 78000, Versailles, France.