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Case Reports
. 2019 Jun 17:2019:8697360.
doi: 10.1155/2019/8697360. eCollection 2019.

Trigger Twins: 2 Cases of Ipsilateral Twin Trigger Digit and a Review of Published Literature

David Brinkman  1 , Gerard Sheridan  1 , Michael O'Sullivan  1
Affiliations
Case Reports

Trigger Twins: 2 Cases of Ipsilateral Twin Trigger Digit and a Review of Published Literature

David Brinkman et al. Case Rep Orthop. .

Abstract

Background: The aetiology of trigger digits has been debated since Notta first described them in 1850. Aetiology has been segregated for adult and paediatric presentations. While an adult trigger digit is most likely an acquired inflammatory process, the same is not true for cases in children: no inflammatory reaction is seen on microscopic evaluation. We wish to add strength to a genotypical aetiology for paediatric cases.

Methods: We present two cases of monozygotic twins with trigger digits managed in our institution. A comprehensive review of literature was conducted for cases of trigger digit in monozygotic twins to support our theory.

Results: Our two sets of twins enjoyed a full recovery from surgery at one-month follow-up. A total of seven other cases of monozygotic twins were found in literature.

Conclusion: Our cases add to the growing body of evidence supporting a genotypical aetiology for paediatric trigger digit.

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Figures

Figure 1
Figure 1
Ipsilateral trigger thumbs.
Figure 2
Figure 2
Node of Notta visible during A1 pulley release.
See this image and copyright information in PMC

References

    1. Notta A. Recherches sur une affection particuliere des gaines tendineuses de la main. Arch Gen Med. 1850;24:142–161.
    1. Buchman M. T., Gibson T. W., McCallum D., Cuda D. D., Ramos A. G., Jr Transmission electron microscopic pathoanatomy of congenital trigger thumb. Journal of Pediatric Orthopedics. 1999;19(3):411–412. doi: 10.1097/01241398-199905000-00024. - DOI - PubMed
    1. Kakel R., van Heerden P., Gallagher B., Verniquet A. Pediatric trigger thumb in identical twins: congenital or acquired? Orthopedics. 2010;33(3) doi: 10.3928/01477447-20100129-33. - DOI - PubMed
    1. Thomas S. R., Dodds R. D. Bilateral trigger thumbs in identical twins. Journal of Pediatric Orthopaedics Part B. 1999;8(1):59–60. - PubMed
    1. Wang E. D., Xu X., Dagum A. B. Mirror-image trigger thumb in dichorionic identical twins. Orthopedics. 2012;35(6):e981–e983. doi: 10.3928/01477447-20120525-48. - DOI - PubMed

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