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Related Experiment Videos

Congenital triangular bones in the hand

V E Wood, A E Flatt

    The Journal of Hand Surgery
    |May 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Delta bone deformity, a triangular shape in hand bones, occurs in 3.5% of upper extremity congenital abnormalities. This study reviews its natural history and treatment in 49 patients with delta-shaped phalanges.

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    Area of Science:

    • Orthopedics
    • Medical Genetics
    • Developmental Biology

    Background:

    • Triangular bone deformity, specifically delta-shaped phalanges, is a rare congenital condition affecting the hand.
    • Literature review identified 105 cases, while this study adds 49 new patients with 84 affected phalanges.

    Purpose of the Study:

    • To investigate the incidence, associations, natural history, and treatment guidelines for delta-shaped phalanges in congenital hand abnormalities.
    • To establish general rules for managing this specific bone deformity.

    Main Methods:

    • Retrospective review of 49 patients with delta-shaped phalanges.
    • Analysis of associated congenital abnormalities and long-term follow-up data (average 14 years).
    • Comparison with existing literature on triangular bone deformities.

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    Main Results:

    • Delta-shaped phalanges represent 3.5% of congenital upper extremity abnormalities in this cohort.
    • Commonly associated anomalies include syndactyly, polydactyly, symphalangism, triphalangeal thumb, cleft hand, and hypoplastic hand.
    • Specific associations noted: index finger delta bone with Apert's syndrome, ring finger delta bone with central polydactyly.

    Conclusions:

    • Delta bone deformity is a distinct entity with significant associations with other congenital hand anomalies.
    • Long-term follow-up provides insights into the natural history, informing treatment strategies.
    • Further research is warranted to refine management protocols for delta-shaped phalanges.