# Functional accessory limb arising from the buttock: a case report

## TL;DR

A rare case of an infant born with an extra limb from the buttock is reported, with successful surgical removal and hip treatment.

## Contribution

A detailed case report of polymelia with a focus on diagnostic and therapeutic considerations.

## Key findings

- An accessory limb with sensate and mobile joints was surgically removed from a 2-month-old infant.
- No spinal dysraphism was found, but a left dislocated hip was identified and treated successfully.

## Abstract

Polymelia, or accessory limb, is a rare congenital abnormality with unknown etiology. Here we report the case of an infant with an accessory limb, review the diagnostic and therapeutic consideration of such cases, and highlight the potential challenges in management of an accessory limb.

We report the case of a 2-month-old male with an accessory limb arising from the left buttock. The limb was sensate and mobile joints. Our diagnostic workup did not reveal associated spinal dysraphism, but a left dislocated hip was found. The limb was surgically removed, and the hip dislocation was eventually treated with open reduction, with excellent results.

This study reports a rare case of accessory limb and reviews the important considerations in the management of this condition.

Not applicable.