Percutaneous hallux valgus surgery: Comparison between mini-invasive Chevron and Bosch osteotomies

Abstract

Background and objectiveThrough percutaneous approaches, hallux valgus corrections can be performed with minimal soft tissue injury, postoperative pain, and good cosmetic results. Bosch osteotomy and MICA (Minimally Invasive Chevron Akin) have been shown to be effective techniques for the correction of hallux valgus, although there are currently no publications comparing percutaneous techniques with each other. The aim of this work is to compare the radiological and functional results of both techniques. Materials and methodsA retrospective, comparative study was carried out on patients with moderate hallux valgus. They were divided into 2 groups according to the percutaneous technique used: chevron osteotomy and Bosch osteotomy with screw fixation. The metatarsophalangeal, intermetatarsal, and distal articular veneer declination angles of the first metatarsal and the bone consolidation time were evaluated radiologically. The American Orthopaedic Foot and Ankle Surgery (AOFAS) scale was used for functional assessment. Complications were collected during the first year. ResultsThirty-eight patients in each group were included for the study. In each of the groups, the radiological angles were compared preoperatively and at the end of the follow-up, showing statistically significant changes in the 3 variables considered; but no differences were obtained by comparing them with each other. The time of consolidation was also similar in both groups. As for the AOFAS scale, an improvement was obtained with both techniques, but the difference was not significant when comparing them. ConclusionsBoth Bosch and MICA techniques showed comparable results at the end of the monitoring. Further work is needed to determine the advantages of each in the immediate postoperative period.