**2. Material and methods**

In this review of literature, the authors have used Pubmed database to search for various studies that factors that may contribute to ACL injury. The authors used the keywords anterior cruciate ligament, risk factors, extrinsic risk factors, intrinsic risk factors to search for articles. After eliminating the duplicates, the authors identified the trends and patterns in the risk factors and have summarised the findings in this article to create a concise review for readers and students.
