ACL injuries are very frequent in sports medicine. This research set out to comprehensively evaluate the existing research on late outcomes in the wake of ACL repair. From the beginning until April 2020, all Medline searches have been conducted using PubMed, SCOPUS, Web of Science, Cochrane Central Register of Controlled Trials (CENTRAL), and Google Scholar. 2089 distinct records were found during the search. We were left with 57 possibly suitable records, of which we did full-text searching on all of them. The final count was twelve studies. After ACLR, the long-term rate of Lachman Grade 0-1 was estimated to be 97.8 percent (95 percent confidence interval: 196-99.5 percent). This figure shows that, although on the one hand, the long-term average of Pivot Grade 0-1 after ACLR was 97.8 percent (95 percent CI 96– 99.5 percent), the effect estimates indicate that the long-term average rate of Pivot Grade 0-1 after ACLR was only 95.3 percent (95 percent CI 95.2– 95.5 percent). IKDC score A rate was 55.4% (95% CI 42.7–68.2%). The Lysholm mean score was 84.4 (95% CI: 84.4 to 84.4). The failure rate in the current research varied between 0 and 10%, whereas the complication rate ranged between 8 and 11%. Meniscal operations, notchplasty, irrigation, and debridement were most frequent complications. A total of 12 investigations revealed that Lachman Grade 0-1 (most severe) after ACLR results in a 97.8 percent success rate, and Pivot Grade 0-1 (most severe) after ACLR results in a 97.8 percent success rate. Prior to surgery, the Lysholm score had been at an insufficient level.