Objective    To investigate the outcomes of arthroscopic reduction and internal fixation with cannulate lag screw for avulsion fracture of tibial intercondylar anterior eminence.     Methods    From May 2004 to December 2007

30 cases of tibial intercondylar anterior eminence avulsion fracture were treated by arthroscopic reduction and fixation with cannulated lag screw. Among the patients

there were 10 females and 20 males

ranging from 15 to 79 years old with an average age of 32.0. There were 12 fresh fractures and 18 old fractures. According to Meyers-McKeever-Zaricnyl’s classification systems

there were 8 cases of type   Ⅱ

15 cases of type    Ⅲ

and 7 cases of type   Ⅳ. Patients were encouraged to do postoperative rehabilitation

such as active joint extension and flexion

exercise of isometric contraction of quadriceps femoris. The treatment outcomes were evaluated by Lysholm and Irrgang knee score system．    Results    All patients were followed up for 3 months to 60 months (averaging 31.2 months). X rays revealed bony healing 2 months after operation . The joints were stable. Negative Lachaman and drawer and jerk tests were found in all cases

and there was no dysfunction in the knee joints. Lysholm scores were increased from (60.8±1.5) to (95.5±3.5) while Irrgang scores increased from (55.5±3.3) to (90.5±2.5).     Conclusion    Arthroscopic treatment of avulsion fracture of tibial intercondylar anterior eminence is an easy approach with minimal invasion

and has reliable reduction and fixation with satisfied results.