Arthroscopic Anterior Talofibular Ligament Repair for Chronic Ankle Instability with a Suture Anchor Technique

Abstract

The goal of this study was to retrospectively evaluate the clinical outcomes of arthroscopic repair for chronic ankle instability using a bioabsorbable anchor with 2 sutures. We evaluated the results of 28 ankles treated with arthroscopic anterior talofibular ligament repair using bioabsorbable anchors with a FiberWire and TigerWire suture (Arthrex, Inc, Naples, Florida) placed on the fibula from March 2008 to January 2009. Average follow-up was 15.9 months (range, 13-25 months). Patients were evaluated using the American Orthopaedic Foot and Ankle Society (AOFAS) hindfoot ankle score and stress radiographs. Mean AOFAS hindfoot ankle score was 92.48 ± 6.14 at last follow-up compared to the mean preoperative score of 60.78 ± 16.38 (P=.041). Mean postoperative anterior draw test score difference between 2 ankles was 0.61 ± 0.75 compared to the mean preoperative score difference of 3.59 ± 0.68 (P=.00). There was a 14% complication rate, including 3 cases of portal site irritation and 1 case of superficial infection. Stress radiographs revealed 3 cases of anterior displacement >3 mm compared to the other side. All patients returned to their previous activity level.Arthroscopic ligament reconstruction for chronic lateral ankle instability using suture anchors is effective in returning patients to their preinjury function levels. Good clinical results were obtained with some minor complications. This minimally invasive technique is a reasonable alternative to other open surgical procedures for chronic ankle instability.