What's the evidence on surgical treatment for congenital brachymetatarsia: A systematic review and meta-analysis

Purpose: Brachymetatarsia is marked by the shortened length of one or more metatarsal bones. Several operative options have been suggested without demonstrating the superiority of one treatment over another. This study aims to assess the main available treatment, bone lengthening achieved, clinical outcomes, and complications pertaining to congenital brachymetatarsia interventions.Methods: A literature search of PubMed, Embase, Scopus, and Cochrane databases was performed according to PRISMA guidelines. Result: After the screening process, 13 articles were included in the review. Brachymetatarsia mainly occurs in females at a ratio of 14.8:1, and bilateral involvement in 25.8 % of cases. The fourth metatarsal is most affected, followed by the first metatarsal. The main surgical procedures are one-stage approach which results in limited length gain but fewer complications, and gradual lengthening which achieves greater length but has a higher complication rate, including metatarsophalangeal or interphalangeal subluxation, fractures, and infections. The first metatarsal reported better values concerning lengthening rate and healing index compared to fourth metatarsal, while no differences were observed in distraction rates or clinical outcomes. More complications, such as stiffness, fractures, and cavus foot were associated with first metatarsal lengthening. Conclusions: It is not possible to identify a gold standard technique for addressing this condition. The two predominant surgical techniques bear advantages and drawbacks. A judicious case-by-case assessment is mandatory to determine the optimal surgical approach. Exploring the combination of techniques could be promise in mitigating the limitations associated with the main two methods and achieving better forefoot balance. Level of evidence: Level II, systematic review.