We report the results of arthroscopic ACL reconstruction using an allo-cortical bone interference screw and a bone-patellar tendonbone (BPTB) autograft.

A preoperative average KT-2000 tests was 6.8 mm (±1.3 SD), Lysholm score 71.8 (±8.4 SD), Tegner score 3.2 (±0.6 SD) and IKDC score was below C in all cases. At the final follow-up, the average KT-2000 test score was 2.3 mm (±0.8 SD), Lysholm score 91.2 (±5.3 SD), Tegner score 6.8 (±1.4 SD) and the IKDC score was above B in all except two cases. The MRI findings of 3 and 6 months after operation showed diffuse bony edema around an allo-cortical bone interference screw. The shape of screw was well demarcated. At 12 months after operation, the bony edema was markedly decreased and the shape of screw was poorly demarcated.

A preoperative average KT-2000 tests was 6.8 mm (±1.3 SD), Lysholm score 71.8 (±8.4 SD), Tegner score 3.2 (±0.6 SD) and IKDC score was below C in all cases. At the final follow-up, the average KT-2000 test score was 2.3 mm (±0.8 SD), Lysholm score 91.2 (±5.3 SD), Tegner score 6.8 (±1.4 SD) and the IKDC score was above B in all except two cases. The MRI findings of 3 and 6 months after operation showed diffuse bony edema around an allo-cortical bone interference screw. The shape of screw was well demarcated.At 12 months after operation, the bony edema was markedly decreased and the shape of screw was poorly demarcated.

The allo-cortical bone interference screw is one of a fixation materials in ACL reconstruction using a BPTB autograft, if does not seen to have the disadvantages of metallic or bioabsorbable interference screws.