Surgical Techniques for Syndactyly Correction

Syndactyly, the congenital fusion of digits, is among the most common hand anomalies and presents in simple or complex forms, with complete or incomplete involvement of soft tissues and bones. Surgical intervention typically occurs between six and 18 months of age to prevent long-term functional limitation and improve aesthetic appearance. The fundamental aim is to recreate a mobile interdigital space, protect neurovascular bundles and achieve balanced soft-tissue coverage. Classic approaches employ geometrically designed skin flaps—such as various Z-plasty configurations, dorsal advancement flaps or V-to-Y flaps—to separate the digits and reconstruct the web. Where local tissue is insufficient, split-thickness skin grafts have traditionally been applied to cover defects, though graft donor-site morbidity and potential for web creep have spurred interest in alternatives. Recent innovations include the use of synthetic dermal substitutes, secondary-intention healing protocols and “spare parts” techniques using excess tissue from adjacent anomalies such as thumb polydactyly. Preoperative vascular mapping via advanced imaging further refines flap design and reduces intra-operative uncertainty. Despite advances, complications such as web contracture, scar hypertrophy and need for revision persist, underscoring the importance of patient-centred outcome measures and long-term follow-up.

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Surgical Techniques for Syndactyly Correction publication trend

The graph below shows the total number of articles in surgical techniques for syndactyly correction across all publications each year (not limited to Nature Index journals).

Technical terms

Syndactyly: Congenital fusion of two or more digits involving skin and sometimes bone.

Z-plasty: A geometric transposition flap technique that lengthens contracted tissue and reorients scar lines.

Skin flap: A unit of tissue with its own blood supply mobilised to cover a surgical defect.

Skin graft: Transplantation of epidermal and partial dermal layers from a donor site to a recipient wound.

Web creep: Gradual proximal migration of the reconstructed interdigital fold leading to recurrence of fusion.

References

1. Validating Grading of Aesthetic Outcomes of Web Space Reconstruction for Finger Syndactyly: Crowdsourcing Public Perceptions Using Amazon Mechanical Turk. Aesthetic Surgery Journal Open Forum (2020).
2. Syndactyly in the Pediatric Population: A Review of the Literature. Cureus (2023).
3. Preoperative MRI Evaluation of Hand Vessels in Children With Congenital Syndactyly Malformation by a Contrast-Enhanced Three-Dimensional Water-Selective Cartilage Scan. Frontiers in Pediatrics (2022).
4. A novel technique to widen the 1st web space by using 'spare parts' of thumb polydactyly. Sri Lanka Journal of Surgery (2022).