Polysyndactyly

NewsBot · Nov 17, 2022

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Reconstruction of polysyndactyly of the fused fifth toe with the fourth toe
Du, Zijing; Cui, Yan; Jiang, Hao; Han, Dong
Journal of Pediatric Orthopaedics B: November 14, 2022 - Volume - Issue - 10.1097

Polysyndactyly of the fused fifth toe with the fourth toe is a common subtype of postaxial polydactyly. The aim of the study was to present an operative technique for cosmetic improvement and reconstruction of polysyndactyly of the fused fifth toe with the fourth toe. We retrospectively reviewed the details of 22 patients with postaxial polydactyly treated from January 2018 to May 2021. The operation involved medial toe excision and web space reconstruction using a dorsal rectangular flap without skin grafting and simultaneous correction of a valgus deformity by chondroplasty and soft tissue balancing without an osteotomy. The web shape, scar, and aesthetic outcomes were evaluated on the criteria of the D‘Arcangelo, Vancouver Scar Scale score, and satisfactory questionnaire, respectively. The patients were followed up for 7–43 months. At the last follow-up, valgus deformity was completely corrected without recurrence. On the basis of the criterion of D‘Arcangelo, the height and width of the webs were good in 24 of the feet, fair in four of the feet, and poor in none of the feet. The mean Vancouver Scar Scale score was 1.55. All parents and patients were satisfied with the appearance and function. The described medial toe excision technique and reconstruction of the web space without a skin graft corrected the valgus deformity and were able to satisfy functional and cosmetic requirements.
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NewsBot · Dec 7, 2022

Usefulness of Intraoperative Arthrography for Postaxial Polysyndactyly of the Foot
Sakai, Yuko MD; Kawamura, Daisuke MD, PhD; Endo, Takeshi MD, PhD; Iwasaki, Norimasa MD, PhD
Journal of Pediatric Orthopaedics: December 8, 2022 - Volume - Issue - 10.1097/BPO.0000000000002323

Background:
Surgery for polydactyly of the foot aims to achieve good cosmesis and improve shoe fitting. An accurate understanding of toe morphology will help to minimize the skin incision or optimize the surgical plan before incision. However, it is difficult to determine the shape of the articular surface using radiographs of children with immature bone. We performed arthrography during surgery for postaxial polydactyly of the foot to assess the cartilaginous structures. The purpose of this study was to investigate the usefulness of arthrography in postaxial polydactyly of the foot.

Methods:
We included 36 digits of 31 patients (16 males and 15 females), including 5 bilateral cases. The age at surgery ranged from 9 to 75 months (mean, 20 mo). Intraoperative arthrography was performed and all radiographs and arthrograms were reviewed and classified by 3 observers using the Watanabe classification. The absolute percentage agreement between the observers was calculated. The senior author assigned the arthrograms as the reference. The types determined by the other 2 observers using radiographs and arthrograms were compared with the reference.

Results:
Full agreement occurred in 66.7% of the radiographs and in 75% of arthrograms. The mean kappa coefficient was 0.58, indicating fair agreement, between the reference and the radiologic assessment, while it was 0.81, indicating excellent or almost perfect agreement, in the evaluation using arthrograms.

Conclusions:
Intraoperative arthrography is an easy and reliable diagnostic method that can be used to determine the detailed articular shape.
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