A P Singh, MBBS, D.ORTH, DNB, DAE, is an eminent orthopaedic surgeon and a leading expert on back pain. This work is born out of his three decade long experience and expertise as a doctor treating patients with backache. Dr Singh is currently the Medical Director, Uma Sanjeevani Hospitals, DLF City and Sector 55, Gurgaon. In the past he has worked at the Safdarjung Hospital, New Delhi; St Louis Hospital, Paris; Massachusetts General Hospital, Boston; and SUNY Medical Center, Syracuse, New York.