Introduction: Rupture of posterior cruciate ligament is considered an extremely rare injury, that has been overlooked in the past and consequently received significantly less attention when compared with other knee ligament injuries. Due to low volume of the research, there is a lot of controversy among scientists when it comes to total cruciate ligament rupture treatments. Studies found in the last decade have been a major contribution to posterior cruciate ligament anatomy and biomechanics, which also brings better operative techniques and development of an appropriate rehabilitation protocol. However, the guidelines for a proper posterior cruciate ligament rupture treatment have still not been agreed upon. Purpose: The purpose of our study is to compare the outcomes of conservative and operative treatment after posterior cruciate ligament ruptures based on professional and scientific literature. Methods: Our study is a literature review. The search for eligible studies was conducted with electronic database PubMed with combination of the following keywords: (“PLC rupture” OR “posterior cruciate ligament rupture”) AND (“conservative treatment of PCL rupture”) AND (“PCL reconstruction” OR) (Operative treatment of PCL rupture ”OR“ PCLR outcomes ”). The search for literature was conducted between December 2019 and October 2020 and limited to studies published after January 2005. Results: A total of 444 subjects from nine studies were included in this literature review. There was a statistically significant decrease in posterior translation in one conservative study and four operative studies. Discussion and conclusion: The results of our literature review show lack of evidence-based studies, particularly in total isolated cruciate ligament ruptures, where disagreements about a proper treatment choice among professionals are strongly present. In order to properly compare the results in the future studies, it would be reasonable to evaluate the effects of both types of treatment according to a single protocol, and study different grades of posterior cruciate ligament ruptures separately, to obtain more accurate results.
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