40 patients scheduled for anterior cruciate ligament reconstruction were randomized to either single-bundle reconstruction with additional anterolateral ligament reconstruction or to double-bundle reconstruction. internal rotation laxity was measured intraoperatively. No significant difference between groups was noted in internal rotation laxity at the completion of the procedure. In approximately 2/3 of patients in the SB ACL plus ALL reconstruction group, significant change in rotational stability was observed from before to after completion of the ALL reconstruction.