Podium (Sports) 17

Tunnel widening after anterior cruciate ligament reconstruction with bioabsorbable tibial screw and suspensory femoral fixation or all-inside reconstruction with suspensory fixation

Dr. Okan Ates Diyarbak?r Gazi Ya?argil

Purpose In this study we searched difference of tibial tunnel widening after anterior cruciate ligament reconstruction (ACLR) between using bioabsorbable tibial screw and suspensory femoral fixation or all-inside reconstruction technique


Method In this study 47 patients are taken assessment, who operated because of ACL rupture from january 2017-october 2020. The patients are operated by one surgeon and hamstring tendon is used as grafth. We measured tibial tunnel widening by using magnetic resonance imaging (MRI) after ACLR approxiamately one year. In the measurement made with MRI, both sagittal and coronal sections were measured.


Results MRI imaging were performed in 47 patients in two groups. Group 1 includes 26 patients who underwent bioabsorbable tibial screw and suspensory femoral fixation, group 2 includes 21 patients who underwent all-inside reconstruction with suspensory fixation. Tunnel diamaters are measured from 2 cm distal of articular surface then percentage of bone widening is calculate. On MRI coronal section tibial tibial tunnel volumes changed from the postoperative state (%100) to %121,1 with group 1 and %100 to %108,6 with group 2,on sagittal section %100 to %123,2 with group 1 and %100 to %109,1 with group 2. There was statistically larger increase in tibial tunnel widening in group 1 compared to group 2 (p<0,01).


Conclusions Bioabsorbable tibial screw and suspensory femoral fixation technique with ACLR results in increased tibial tunnel widening in comparison ACLR with all-inside technique with suspensory fixation. Tibial tunnel widening results found in our study are compatible with the literature so that we think that MRI represents a reliable imaging modality for futures studies investigating tunnel widening with after ACLR.