Pediatric Reconstructive Hand Surgery for Syndactyly & Polydactyly
Congenital hand anomalies such as syndactyly (webbed fingers) and polydactyly (duplicate digits) occur during early embryonic limb bud development when apoptosis fails to separate adjacent digital rays or excessive ectodermal signaling creates extra digits. If webbed fingers of unequal length (such as the thumb and index, or ring and small fingers) remain connected, differential bone growth causes lateral deviation, joint tethering, and permanent finger crookedness (clinodactyly).
Principles of Anatomical Finger Separation
Dr. Vishal Purohit utilizes refined pediatric plastic surgery techniques to separate conjoined digits:
- Zig-Zag Interdigital Flaps (Cronin-Flatt): Utilizing alternating zig-zag flaps along the sides of fingers rather than straight incisions, preventing longitudinal scar contractures that could pull fingers crooked as the child grows.
- Commissure Reconstruction: Creating a sloping, natural dorsal-to-volar rectangular or triangular flap to line the deep web space commissure, preventing web creep.
- Full-Thickness Skin Grafting: Because a circumference of two separated fingers requires 22% more skin than when fused, full-thickness skin grafts harvested from the groin crease are meticulously inset to cover lateral defects.
- Polydactyly Digit Rebalancing: For duplicate thumbs (Wassel classification), combining the best elements of both digits (Bilhaut-Cloquet technique) while reconstructing collateral ligaments and re-inserting intrinsic muscles.
Long-Term Hand Function and Growth
Typically performed between 12 and 18 months of age, surgical separation enables normal sensory tactile exploration, pincer grasp, and unrestricted hand growth.