Department of Anaesthesiology;
Hospital of Bülach;
Bülach;
Switzerland;
Department of Orthopaedic Surgery and Traumatology;
Hospital of Schaffhausen;
Schaffhausen;
Switzerland;
Department of Orthopaedic Surgery and Traumatology;
University of Basel;
Basel;
Switzerland;
Wear; Total Hip Arthroplasty; Cobalt; Chromium; Molybdenum; Heterotopic Ossification;