Bioabsorbable polyglyconate interference screw fixation in anterior cruciate ligament reconstruction: A prospective computed tomography-controlled study

Purpose: It was the purpose of the study to evaluate a new polyglyconate bi oabsorbable interference screw for graft fixation in anterior cruciate liga ment (ACL) reconstruction. Type of Study: Prospective randomized. Materials and Methods: Ferry patients who underwent endoscopic ACL reconstruction we re included in the study and randomized intraoperatively. Group A consisted of 20 patients (6 women, 14 men; mean age, 29.6 years) who had femoral bon e block fixation with a bioabsorbable interference screw and tibial fixatio n with a titanium interference screw. Group B included 20 patients (5 women , 15 men; mean age 29.6 years) who had fixation of both femoral and tibial bone blocks with titanium interference screws. There was no significant dif ference between the groups with regard to age, Sender, height, weight, time from injury to surgery, activity level, and concomitant injuries. Results: Clinical results (using IKDC, Lysholm, Tegner scores) of the 2 groups as w ell as instrumented laxity measurements (KT-1000) did not show significant (P > .05) differences at any stage of follow-up. No complications with resp ect to graft fixation could be found. Computed tomography scans, performed within the first postoperative week, at 6 weeks, and at 3, 6, 12, and 24 mo nths postoperatively revealed a uniform picture for all patients within the groups, showing completed screw degradation at 12 months in group A. Concl usion: Polyglyconate interference screw fixation for patellar tendon grafts has not been found to be associated with increased clinical complications or significant osteolysis. It provided equivalent fixation and clinical res ults compared with titanium screws. However, replacement of the screw with bone did not take place for up to 3 years postoperatively.