Presentation
Congenital foot deformity.
Patient Data
Polydactyly includes seven toes (heptadactyly), six complete metatarsal and a small incomplete metatarsal, and internal foot inversion. The extra digits are lateral to the first toe, indicating a central polydactyly.
Case Discussion
Heptadactylia is a rare congenital disorder belonging to the polydactyly group and causing the subject to have 7 fingers or toes.
This case demonstrates a central foot polydactyly, the rarest form of polydactyly, which accounts for only 6% of the polydactyly cases.
The most frequent polydactyly type is lateral or post-axial polydactyly (79%), which requires surgical correction involving excision of the border digit. Medial or pre-axial polydactyly (15%) is the second most common type, requiring more intricate surgical reconstruction.
The duplicated central polydactyly location complicates surgery and often requires a wedge resection; however, this can widen the forefoot. Another surgical technique for central ray polydactyly utilized dorsal and plantar advancement flaps for second and third ray duplications and successfully narrowed the foot.
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