Complication Rates of Minimally Invasive Chevron Osteotomy for Correction of Hallux Abductovalgus: A Systematic Review.

Background: Recent advancements in minimally invasive surgery for correction of hallux abductovalgus has increased the popularity of this technique. To date, the incidence of complications with this updated technique has not been evaluated.
Methods: The purpose of this systematic review was to determine the incidence of complications of third-generation minimally invasive chevron osteotomy, with or without an Akin osteotomy, for the correction of hallux abductovalgus. We conducted a systematic review of electronic databases and relevant peer-reviewed sources as outlined by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines for the preparation of systematic reviews. Studies that reported hallux abductovalgus deformities corrected with minimally invasive surgery and fixated with one or two screws, provided detailed descriptions of all complications, and had mean follow-up of 12 months or more were included.
Results: Of 80 studies identified, nine (11.25%) met the inclusion criteria (N = 766 feet). Three of these studies were prospective and involved 426 feet. The weighted mean age for the entire cohort was 50.88 years (17-87 years), and the weighted mean follow-up was 27.65 months (12-66 months). The total incidence of complications was 21.28% (163 of 766 feet). Among the most reported complications were reoperation, postoperative infection, reoccurrence of hallux abductovalgus, and nerve injury.
Conclusions: This systematic review revealed that this updated minimally invasive surgery technique provides a safe and reproducible surgical option to correct hallux abductovalgus deformities, with an incidence of complications comparable with that of open correction for this forefoot deformity.