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Thumb polydactyly with radius hypoplasia--a case report.

Salih Marangoz¹, Gürsel Leblebicioğlu

¹Division of Hand Surgery and Microsurgery, Department of Orthopaedic Surgery, Faculty of Medicine, Hacettepe University, Ankara, Turkey. Salih.Marangoz@med.nyu.edu

The Journal of Hand Surgery

|December 6, 2006

Summary

This study reports a rare case of a patient with both triplication of the thumb and radial longitudinal deficiency in the same limb. This combination of congenital limb abnormalities is exceptionally uncommon.

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Area of Science:

Orthopedics
Medical Genetics
Developmental Biology

Background:

Triplication of the thumb is an extremely rare congenital anomaly, documented in limited case reports.
Radial longitudinal deficiency (RLD) is a more frequently observed congenital upper limb malformation.
Typically, these two conditions do not manifest concurrently in the same extremity.

Observation:

This report details a unique patient presenting with the simultaneous occurrence of thumb triplication and a hypoplastic radius within a single limb.
The patient exhibited three distinct thumbs and underdeveloped radius bone structure.

Findings:

The co-occurrence of thumb triplication and radial longitudinal deficiency in the same limb represents a significant deviation from typical presentations.

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This case highlights the potential for rare combinations of congenital limb malformations.

Implications:

Understanding such rare combinations can enhance diagnostic capabilities for complex limb abnormalities.
Further research into the genetic and developmental pathways underlying these combined malformations is warranted.
This case may inform future clinical management strategies for patients with syndromic or complex limb anomalies.