Mr Nwaboku qualified in 1989 from The Middlesex and University College Hospitals Medical School, University College Hospital London. He underwent specialist training in various hospitals including the Royal National Orthopaedic Hospital and the Chelsea and Westminster hospital. He gained experience in hip and knee replacement surgery and arthroscopic surgery of the knee working for world renowned hip and knee surgeons. He spent six months on the professorial unit at the Royal National Orthopaedic Hospital.

He is a fellow of the Royal College of Surgeons of England and the Royal College of Surgeons of Edinburgh and was lead clinician for two years at Barnet Hospital and the service line lead for Barnet Hospital and Chase Farm Hospital.

Mr Nwaboku is a founding member of a group of surgeons called Total Orthopaedics providing a multispecialty service for the assessment and treatment of patients with musculoskeletal complaints.