Synpolydactyly of the hand: a radiographic classification

Author:

Wall L. B.1,Bae D. S.2,Oishi S. N.3,Calfee R. P.1,Goldfarb C. A.1

Affiliation:

1. Department of Orthopaedic Surgery, Shriner’s Hospital for Children and St. Louis Children’s Hospital at Washington University School of Medicine, St Louis, MO, USA

2. Department of Orthopaedic Surgery, Boston Children’s Hospital, Boston, MA, USA

3. Texas Scottish Rite Hospital, Dallas, TX, USA

Abstract

Synpolydactyly is an uncommon congenital anomaly characterized by polydactyly with syndactyly in the central hand. The purpose of this investigation was to develop and assess the reliability of a radiographic classification system for synpolydactyly. We identified 56 hands with central synpolydactyly and developed a radiographic classification system that categorizes by the location within the hand, the bony level of polydactyly, and the presence of a delta phalanx. Four paediatric hand surgeons independently reviewed each radiograph to establish reliability. There was exact agreement among raters in 40 cases (71%). The inter-rater reliability was 0.97 and intra-rater reliability was at least 0.87. Seven of 16 bilateral cases had symmetric deformity classification. The most common presentations were types 1A and 2A. We present a new, reliable radiographic classification system for synpolydactyly that will allow improved communication between clinicians and serve as a foundation for future investigations. Level of Evidence: 2

Publisher

SAGE Publications

Subject

Surgery

Cited by 10 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Syndactyly;The Pediatric Upper Extremity;2024

2. Recent Advancements in the Diagnosis and Treatment of Congenital Hand Differences;Journal of the American Academy of Orthopaedic Surgeons;2023-06-28

3. An Evolution of the Surgical Management of Synpolydactyly;Annals of Plastic Surgery;2023-03-02

4. Central polysyndactyly;Radiopaedia.org;2023-02-14

5. Central Synpolydactyly;Pediatric Hand Surgery;2023

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