Arthroscopic Reconstruction of Anterior Cruciate Ligament by Hamstring Graft; Endobutton vs Rigidfix

Introduction: anterior cruciate ligament (acl) tear is a common sport injury. in recent years hamstring ligaments have become the most widely used graft for acl reconstruction. one important issue is type of femoral side graft fixation. we compared the clinical outcomes of two femoral side fixation methods, endobutton and rigidfix. methods: from march 2014 to march 2016, 147 patients with acl tear were treated by arthroscopic acl reconstruction using autogenous quadruple hamstring graft. femoral side fixation was performed with endobutton or rigidfix. demographic and perioperative data were collected from hospital documents. patients were evaluated using objective and subjective international knee documentation committee (ikdc) and lysholm knee scores. findings: 87 (59%)cases (48 endobutton and 39 rigidfix) were accessible for final evaluation. mean duration of follow up was 18(range 17-22) months. there was no significant difference between two groups regarding age, gender, body mass index (bmi), damage mechanism, activity level and postoperative pain, limp, subjective ikdc and lysholm scores. pivot shift test was normal in all cases of both groups. anterior translation of more than three millimeter in comparison with intact knee in 30o and 90o of flexion was seen in 3(6.25%) and 3(7.69%) of endobutton and rigidfix cases,respectively. conclusion: there was no significant difference between endobutton and rigifix using subjective scores. rotary and anteroposterior stability was similar. both fixation methods result in a stable knee.