After qualifying from The Royal London Hospital in 1982, Mr Cohen trained in surgery in London and then in Cambridge. Mr Cohen completed his MD on the remodelling of bone in response to prosthetic implants and then spent a year on a sports medicine fellowship at a specialist orthopaedic sports clinic in Australia learning advanced arthroscopic techniques.
Mr Cohen was appointed Consultant Orthopaedic Surgeon at University College NHS Trust (UCLH) and Honorary Senior Lecturer at The University of London in 1996. In 1997 he was awarded the prestigious European Travelling Fellowship for the European Shoulder and Elbow Society. Mr Cohen was Clinical Director of Musculoskeletal Services at UCLH between 2000 and 2002. In 2004 he left the NHS and now works solely in private practice mainly at the London Orthopaedic Clinic on Wimpole Street W1 which Mr Cohen founded in 2008.
Mr Cohen specialises in injuries and persistent issues relating to the shoulder, clavicle, elbow, hand, wrist and arm including arthritic conditions as well as traumatic fractures. He uses ultra sound guided arthroscopy and minimally invasive surgery to treat rotator cuff tears, shoulder dislocations including arthroscopic subacromial decompression. Mr Cohen also treats nerve and tendon conditions including tennis elbow, carpal tunnel syndrome and frozen shoulder using a combination of cortisone injections, anti-inflammatory medication, minimally invasive surgery and physiotherapy.