Puri, Sanjay, Manoj Kashid, Gopal Shinde, Tushar Gogia, Praveen Shrivastava, and Sandeep Dubey. 2017. “Outerbridge Classification As a Predictor for the Need of Patellar Resurfacement in Total Knee Arthroplasty: A Prospective Study”. International Journal of Research in Orthopaedics 3 (2):266-70. https://doi.org/10.18203/issn.2455-4510.IntJResOrthop20170785.