Dr. K. Appaji Krishnan did his undergraduate and post graduate training in the prestigious JIPMER (Jawaharlal Institute of Medical Education and Research) , an institute of national importance. After the junior residency he worked as registrar in Spine surgery unit at Apollo Hospitals , Chennai where he trained extensively as spine surgeon under the guidance of Dr. Sajan K Hegde , a very eminent spine surgeon in the country. He also did fellowship in Spine Surgery at The Chonnam National University of South Korea, Gwangju. He has been a visiting fellow with Prof. Jürgen Harms in Germany and Dr. Lawrence Lenke in St. Louis , USA
He has presented many papers in national and international spine meetings and is a faculty in the National spine congresses.
His main area of interest is Spinal deformity surgery in Children, treatment of High grade spondylolisthesis and Adult spinal deformities.