Abstract:[Objective] To investigate the clinical outcomes of arthroscopic Endo-button fixation of posterior cruciate ligament tibial avulsion fracture. [Methods] From February 2016 to February 2020, a total of 17 patients underwent arthroscopic reduction and Endo-but- ton fixation of posterior cruciate ligament tibial avulsion fractures with a assisted posterior medial small incision. The clinical and imaging results were summarized. [Results] All patients had operations completed successfully, with no serious complications such as nerve and blood vessel injury, whereas with operation time of (87.09±19.41) min, intraoperative blood loss of (57.09±10.76) ml, and excellent incision healing in (12.09 ±2.73) days. All patients were followed up for 29.73±7.29 months, and resumed partial weight-bearing walking in (42.12± 5.98) days, protective brace removed in (56.32±9.98) days, and full weight-bearing walking in (12.07±1.23) weeks. The IKDC, Lysholm and Tegner scores, as well as knee range of motion at the latest follow-up significantly increased compared with those preoperatively (P< 0.05) , whereas the tibial displacement measured by KT-1000 significantly reduced compared with preoperatively (P<0.05) , with negative posterior drawer tests in all of them. Radiographically, the fracture was reduced well postoperatively and healed about 12 weeks. [Conclusion] This arthroscopic Endo-button fixation of posterior cruciate ligament tibial avulsion fracture has minimizing trauma and get good sta- bility recovery of the knee.