The authors developed an original method, using tenodesis and anatomical repair, for the treatment of lateral chronic instability of the ankle in young military people. In this medium-term retrospective study, 32 patients were rewieved for functional and radiological evaluation. With a mean follow-up period of 20 months (range from six to 64 months), 90.6%(n = 29) of the patients were 鈥渟atisfied鈥?or 鈥渧ery satisfied鈥? 78.1%(n = 25) were painfree, but 15,6%(n = 5) complained about stiffness. Ninety-seven percent of them (n = 31) returned to athletic activity and no instability occured. The mean score for the Olerud and Molander Ankle Score was 91.5 (range from 70 to 100). On postoperative stress radiographs the mean side-to-side talar tilt difference was 0.6 卤 2.9掳. The mean loosening of eversion isometric strength on the ankle operated was 5.4%. The present study demonstrates that this mixed procedure give excellent results in terms of stability, despite of a well-tolerated stiffness.