title: Rare presentation of foot postaxial polydactyly.
abstract: Polydactyly is a prevalent birth anomaly observed in the foot, and a number of classification systems have been suggested for this condition. Postaxial (fifth or little toe) polydactyly is the most common type. We encountered an exceedingly rare presentation of foot postaxial polydactyly that, to our inspection, had neither been previously classified nor described in published studies. In the present report, we have described an otherwise healthy 2-year-old female who had presented to our clinic with an isolated, extra little toe on her left foot. Foot radiographs revealed the presence of all 5 metatarsals; however, the fifth metatarsal was blocked and did not give rise to the fifth toe. Instead, the fifth (medial normal) and sixth (lateral extra) toes had originated from a single, separate accessory bud from the fourth metatarsal, and the main fourth metatarsal had given rise to the normal fourth toe. The lateral sixth toe was excised, and a periosteal sleeve of the excised extra toe was used for reconstruction of the lateral collateral ligament. We propose that this heretofore unmentioned presentation of postaxial polydactyly be added to the existing systems of classification of pedal polydactyly. A review of the published data pertaining to pedal polydactyly has also been presented.
authors.affiliation: Assistant Consultant Plastic Surgeon, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia. Electronic address: dratif_2@yahoo.com.
authors.forename: Atif
authors.initials: A
authors.lastname: Rafique
authors.affiliation: Trainee Member, College of Physicians and Surgeons Pakistan, Karachi, Pakistan; and Attaché, Surgical Intensive Care Unit, King Faisal Specialist Hospital and Research Centre Riyadh, Saudi Arabia.
authors.forename: Ambreen
authors.initials: A
authors.lastname: Arshad
authors.affiliation: Medical Student, ALfaisal University College of Medicine, Riyadh, Saudi Arabia.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Abu-Zaid
mesh_terms: D002675:Child, Preschool; D005260:Female; D005385:Fingers / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D005528:Foot; D006801:Humans; D017689:Polydactyly / Q000145:classification / Q000000981:diagnostic imaging / Q000601:surgery*; D011859:Radiography; D014034:Toes / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery
keywords: child; congenital anomaly; malformation; metatarsal; phalanx; toe