• Kentaro Matsui, Bernard Burgesson, Masato Takao, James Stone, Stéphane Guillo, Mark Glazebrook, and ESSKA AFAS Ankle Instability Group.
• Queen Elizabeth II Health Sciences Center Halifax Infirmary, Dalhousie University, 1796 Summer Street Halifax, Nova Scotia, B3H3A7, Canada. kenor@nifty.com.
• Knee Surg Sports Traumatol Arthrosc. 2016 Apr 1; 24 (4): 1040-8.

PurposeThe purpose of this study was to determine the evidence-based support for the treatment for chronic ankle instability (CAI) using minimally invasive surgery (MIS) techniques.MethodsA systematic comprehensive review of the literature was performed on 4 September 2015 using PubMed, EMBASE, Cochrane databases and Web of Science along with the two search concepts: lateral ligament of the ankle (patients) and minimally invasive surgical procedure (intervention). Articles of clinical study on MIS for CAI were included in this review and classified into four MIS categories (arthroscopic repair, non-arthroscopic minimally invasive repair, arthroscopic reconstruction and non-arthroscopic minimally invasive reconstruction) based on the adopted surgical procedure. Included articles were reviewed and assigned a classification according to the research method quality of evidence (Level I-V evidence). Analysis of these studies was then conducted to provide a grade of recommendation for each MIS category.ResultsThe systematic literature review generated 430 articles, and 33 articles met our inclusion criteria. The highest recommendation was Grade C (poor-quality evidence) to support the use of the arthroscopic repair, arthroscopic reconstruction and non-arthroscopic minimally invasive reconstruction. Insufficient evidence was currently available to make any recommendation (Grade I) for non-arthroscopic minimally invasive repair category.ConclusionsDespite recent increases in publications on MIS for the treatment for CAI, there was currently poor quality of evidence that was insufficient to allow a high grade of recommendation to support the use of the MIS. This paper should stimulate those surgeons performing higher quality studies in the form of prospective and preferably randomized comparative studies that will be necessary to allow better recommendations for the treatment for CAI with MIS. The present study showed thorough evidence-based recommendation for the clinical use of the MIS based on the comprehensive review of the literature.Level Of EvidenceSystematic review, Level IV.

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