Longitudinal Epiphyseal Bracket of the First Metatarsal Bone: Three Case Reports and a Review of the Literature

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Abstract

Longitudinal epiphyseal bracket (LEB) is a rare bone dysplasia of the tubular bones. Owing to an abnormal secondary ossification center, the affected bones can develop progressive shortening and angular deformity. The aim of our study was to provide an overview of the reported data regarding epidemiology and surgical procedures available for LEB of the first metatarsal bone in a pediatric population combined with a small case series. We report a retrospective case series of 3 nonsyndromic pediatric patients with different ages and with confirmed dysplasia of the first metatarsal bone. All patients presented with unilateral congenital hallux varus deformity and underwent surgical treatment. The radiographs and medical records were reviewed to evaluate the deformity characteristics, treatment, and clinical results. The mean patient age at initial surgery was 34 (range 12 to 63) months, and the median follow-up period was 46 (range 31 to 75) months. Almost all specific radiographic measurements showed correction of the deformity, and each foot demonstrated functional and cosmetic improvement. A standardized literature search was performed to obtain studies of LEB of the first metatarsal bone in the pediatric population. From on our results and the current data available, surgical treatment should be tailored to the patient's age and radiographic stage of LEB. However, monitoring until skeletal maturity of the feet is necessary to assess the final results.

Level of Clinical Evidence: 4

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