Sumit Arora1, Aman Goyal2. 1. Assistant Professor, Central Institute of Orthopaedics, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi 110029, India. 2. Senior Resident, Department of Orthopaedic Surgery, Maulana Azad Medical College and Associated Lok Nayak Hospital, New Delhi 110002, India.