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[Polydactyly of the hands. Recommendation for expanded classification].

M Schrader1

  • 1Medizinischen Universität zu Lübeck.

Handchirurgie, Mikrochirurgie, Plastische Chirurgie : Organ Der Deutschsprachigen Arbeitsgemeinschaft Fur Handchirurgie : Organ Der Deutschsprachigen Arbeitsgemeinschaft Fur Mikrochirurgie Der Peripheren Nerven Und Gefasse : Organ Der V
|May 1, 1991
PubMed
Summary

This study details the anatomy of polydactyly (extra fingers or toes) through dissections and microsurgery. Findings reveal new patterns and classifications for this congenital hand malformation.

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Area of Science:

  • Developmental Biology
  • Anatomy
  • Genetics

Context:

  • Polydactyly, a congenital hand anomaly, presents diverse anatomical variations.
  • Existing literature on polydactyly anatomy is limited.
  • Embryological insights are crucial for understanding polydactyly morphogenesis.

Purpose:

  • To expand the anatomical understanding of polydactyly.
  • To classify polydactyly based on new anatomical findings and existing frameworks.
  • To correlate embryological principles with polydactyly development.

Summary:

  • Anatomical dissections of still-born infants and intra-operative microsurgical investigations of polydactylous hands were conducted.
  • New classifications for polydactyly were developed, incorporating osteological types and variants based on vascular and nerve patterns.

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  • The study confirmed Wassel's osteological types for thumb duplication and expanded classifications for pre-axial and post-axial polydactyly.

    • Impact:

    • Provides a refined classification system for polydactyly, aiding diagnosis and surgical planning.
    • Enhances understanding of the embryological basis of hand malformations.
    • Contributes novel anatomical data to the field of congenital hand anomalies.