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Extra digit arising from the forearm.

G Inoue1, Y Inagaki

  • 1Department of Orthopaedic Surgery, Nagoya University School of Medicine, Japan.

The Journal of Hand Surgery
|July 1, 1991
PubMed
Summary
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A rare case of polydactyly, an extra digit, was observed arising from the forearm. This is the first documented instance of this specific congenital anomaly in medical literature.

Area of Science:

  • Medical Science
  • Clinical Case Reports
  • Congenital Anomalies

Background:

  • Polydactyly is a common congenital anomaly characterized by the presence of supernumerary digits.
  • While various forms of polydactyly are well-documented, presentation from the forearm is exceptionally rare.

Observation:

  • This report details a unique case of a patient presenting with an additional digit originating from the forearm.
  • The extra digit's anatomical and functional characteristics were meticulously documented.

Findings:

  • The case represents the first documented instance of a forearm-originating polydactyly in the English-language medical literature.
  • Detailed morphological analysis confirmed the nature of the supernumerary digit.

Implications:

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  • This case expands the known spectrum of polydactyly presentations.
  • It highlights the importance of comprehensive clinical evaluation for rare congenital anomalies.
  • Further research may elucidate the specific developmental pathways involved in such presentations.