Chronic ankle instability

anatomic thenodesic reconstruction

Abstract

Introduction: Ankle trauma are most common injuries of musculoskeletal system, and consist 40 % of all sport injuries as Colville states. This technique allows to keep safe the peroneus brevis using an autologus tendon and make an anatomic reconstruction. Methods: The patient back down under spine block anesthesia. Two initial aproaches are made, one on the lateral side of the calcaneus just behind of external tuberculum, and another one on the lateral side of the talar neck. A third aproach is made 2cm proximal of fibulas´s tip of 3cm length. Then an osseus tunnel is made on the fibula at same level of tibio talar join. A (recto interno) tendón is prepaired and passed through the fibular tunnel and it´s attached in calcaneus and talus with two (arpones) or two biotenodesis screws. The angle obteined is about 105º. Results: AOFAS score was 97 points, without severe pain, no swollen extremity was found. No patient had to be reoperated. Conclusion: The Chrisman Snook technique produces less postoperative pain, allows a quicker movilization of tibiotalar and subtalar joints. It´s perfomed with small aproaches, no local tendón is used and allows a soon job placement and sports activities.