Dr. med. Karl Zweifel

“Back clinic” indoor practice at Privatklinik Bethanien

Collaboration with Dr. H.J. Holdener, Surgery, Centre for spinal disorders, See-Spital, Kilchberg

Research work with Nuclear medicine at USZ (Prof. Dr. med. G. von Schulthess) in order to evaluate spinal applications of PET and SPECT technology

Job shadowing with Dr. med. P. Metz-Stavenhagen, Werner Wicker Klinik, Bad Wildungen

Foundation of Centre for spinal disorders, Spital Sanitas Multicentre, international participation in the development of the Xia implant with Stryker Howmedica

Periods spent abroad in the USA, Italy, Austria and Germany, under Prof. Dr. med. A. Steffee, Cleveland, Ohio, and others

Chief physician and deputy head of spinal surgery, Schulthess Klinik, Zürich, under Prof. Dr.med. D. Grob and Prof. Dr. med. A. Benini

Chief physician and deputy head of spinal surgery, Orthopaedics, Uniklinik Balgrist, Zürich (CA Prof. Dr.med. Ch. Gerber)

Chief physician, deputy head of spinal surgery, head of the laser laboratory, Orthopaedics, Universitätsspital Zürich (acting chief physician Prof. Dr. med. H. Zollinger)

First introduction of the PLIF and TLIF procedures in Switzerland

Orthopaedic surgery, Orthopaedics, Universitätsklinik Balgrist (Prof. Dr. med. A. Schreiber)

General surgery, Stadtspital Triemli (Dr. med. M. Landolt)

Internal medicine, Spital Uster (Dr. med. M. Spiegel)

General surgery, Stadtspital Triemli (Dr. med. M. Landolt)

Certificate of qualification in interventional pain management, (SSIPM)

Specialism in orthopaedic surgery and traumatology of the musculoskeletal system

Doctor of Medicine (supervised by Prof. Dr. med. G.Yasargil, neurosurgery)

State examinations, Faculty of Medicine, University of Zürich