Syndactyly occurs when two or more fingers fail to fully separate during early development in the womb, leaving them joined. It is one of the most common congenital hand differences and may affect one hand or both. The connection can involve just the skin, or extend to the bones, nails, nerves, and vessels of the neighboring fingers.
Syndactyly can occur on its own or as part of a broader syndrome. Because the fingers grow at different rates, joined digits can pull on one another over time, which is why timely evaluation by a surgeon experienced in children's hands is important.
The specific type guides the timing and the surgical plan. A careful examination — sometimes with imaging — determines which structures are shared before surgery.
Treatment separates the joined fingers and reconstructs the web space between them. Because separating two fingers requires more skin than the webbed position provides, the surgeon resurfaces the sides of the fingers — often using the child’s own skin — to give each digit a durable, natural-looking covering.
Surgery is generally timed to early childhood, and when several fingers are involved the separations are staged so that a finger is never operated on from both sides at once. The goal is independently moving fingers with a stable web space and the best possible function and appearance as the hand grows.
Every child’s anatomy is different. Dr. Panossian tailors the plan to the type of syndactyly, the number of fingers involved, and your child’s age and development.
Dr. Andre Panossian is a board-certified plastic surgeon with specialized fellowship training in pediatric plastic surgery at the Hospital for Sick Children in Toronto under the pioneering Dr. Ronald Zuker, and in vascular anomalies at Harvard’s Children’s Hospital Boston. His dual expertise in pediatric and hand surgery makes him uniquely qualified to treat complex pediatric hand conditions.
Whether your child has been recently diagnosed or you are seeking a second opinion, Dr. Panossian can help you understand your options and develop a personalized treatment plan.
Syndactyly is the most common congenital hand difference, in which two or more fingers are joined or webbed because they did not fully separate during development in the womb. The connection can involve just the skin, or extend to the bones, nails, nerves, and vessels of the neighboring fingers.
Syndactyly is described as simple (fingers joined by skin and soft tissue only) or complex (the fingers also share bone), and as incomplete (webbing extends only partway up the fingers) or complete (webbing extends all the way to the fingertips). The type guides the surgical plan.
Surgery is generally planned for early childhood, with the exact timing tailored to which fingers are joined; fingers of very different length that pull on one another are often separated earlier. Dr. Panossian recommends the right timing for your child at consultation.
After surgery the hand is protected with a dressing or cast while it heals, and follow-up visits and, when helpful, hand therapy support the result. The specifics depend on how many fingers were involved and the extent of the reconstruction.
The goal of surgery is independently moving fingers with a stable web space and the best possible function and appearance as the hand grows. Results depend on the type of syndactyly and the structures the fingers share, which Dr. Panossian reviews before surgery.
Syndactyly correction is generally considered reconstructive and functional rather than cosmetic, so it is often covered by insurance. Coverage varies by plan, so verify your benefits with your insurer; our office can help.
Every child deserves expert care. Schedule a consultation with Dr. Panossian — in person or virtual — to explore treatment options for your child.
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