To analyze comparatively the results of arthroscopic ACL reconstructions using autogenous hamstring tendon with (group II) and without (group I) it's tibial detachment.

A retrospective study of 22 patients (group I; 10, group II; 12) treated with arthroscopic reconstruction using autogenous hamstring tendon was performed. The average follow-up period was 18 months. Functional and clinical results were evaluated according to Clancy's criteria and the Lysholm knee scoring scale. Postoperative anterior laxity was measured using a KT-2000 arthrometer. Using the group I technique, an animal study was done to compare the tension strengths of the afferent and efferent limbs of the graft material.

The mean Lysholm knee score was 82.5 points in group I and 87.8 points in group II at the last follow up. Anterior laxity was 2.9 mm in group I and 1.9 mm in group II at the last follow up. Functional evaluation using Clancy's criteria, showed that 7 patients (70%) in group I and 11 patients (91.6%) in group II had an excellent or a good result. In the animal study, a difference was found between the tension strengths of the the afferent and efferent limbs.

The results of ACL reconstruction in group II were better than those of group I, and the group II technique had the advantage of an graft even tension.