Syndactyly (Joined Fingers) Surgery in Jaipur

What syndactyly (joined fingers) is and how it happens

Syndactyly is a congenital condition in which two or more fingers are joined together. It is one of the most common hereditary limb differences, occurring in about 1 in 2,000 live births. The condition is twice as common in males as in females.

In roughly half of affected children both hands are involved, and the space between the middle and ring fingers (the third web space) is the most frequently affected, seen in about 57% of cases.

During early development, the hand forms as a paddle-like structure with the fingers naturally webbed. Between the 7th and 8th weeks of gestation, a process called interdigital cell death normally separates the fingers. This separation depends on a precise balance of signals — including WNT, BMP and FGF pathways — that tell the tissue between the fingers to disappear. When this balance is disrupted, the tissue persists and the fingers remain joined.

Syndactyly can be simple, where only skin and soft tissue connect the fingers, or complex, where the bones are also fused. It may also occur as part of a syndrome, such as Apert syndrome or Fraser syndrome, which involve other differences in the skull, face, eyes or kidneys.

Symptoms of syndactyly and warning signs that need urgent care the same day

The main feature is webbing between two or more fingers that is present from birth. The webbing may involve only the skin (cutaneous syndactyly) or may extend to include fused bones (bony or complex syndactyly). It can be complete, reaching the fingertips, or partial, stopping partway along the fingers.

The pattern may be symmetrical or asymmetrical, and it can affect one hand or both. Even in the same child, the two hands may look different, and the right and left sides may not match. Subtle differences such as unusual skin folds between the joints may also be present.

Syndactyly itself does not cause pain or illness. There are no urgent warning signs that require same-day care for the webbing alone.

However, if your baby has other differences at birth — such as an unusual head shape, breathing difficulties, feeding problems, or abnormalities of the eyes, kidneys or heart — seek medical attention promptly, as these may indicate an associated syndrome.

Causes of syndactyly and who is at higher risk

The underlying cause is mostly genetic. Researchers have identified many genes involved, including HOXD13, FGFR1, FGFR2, GLI3, RAB23, TWIST1, LRP4, GJA1, FRAS1 and others. Changes in these genes affect the signalling pathways — especially WNT, BMP, FGF, SHH and retinoic acid — that control finger separation in the womb.

Some environmental factors have also been linked to a higher chance of limb differences, including maternal smoking and lower nutritional or economic status during pregnancy. Mothers aged 40 years or older are more likely to have a baby with a congenital limb difference compared with mothers aged 30 or younger.

A family history of syndactyly or related syndromes increases the likelihood, and the condition can vary widely even among affected members of the same family.

How syndactyly is diagnosed: examination and tests

Most cases are diagnosed by clinical examination soon after birth. The surgeon looks at the pattern of webbing, checks whether the fingers can move independently, and feels for bone fusion. X-rays are often taken to see if the bones are joined (complex syndactyly) or if only soft tissue is involved (simple syndactyly), and to plan the surgery. Ultrasound may also be used, especially in younger infants.

Prenatal diagnosis by ultrasound is difficult; hand syndactyly can be mistaken for clenched fists on a scan. If there is a family history or a known genetic syndrome, genetic testing of the affected child and family members can clarify the diagnosis and help with counselling. A detailed family history and clinical information about any other differences in relatives are important parts of the assessment.

Treatment options without surgery, and when surgery is advised

There is no non-surgical treatment that can separate joined fingers. Hand therapy and splinting alone cannot create a web space where none exists. Surgery is the only way to separate the fingers and reconstruct a functional web space.

The timing of surgery depends on the type and severity. For simple syndactyly, the usual recommended age is between 6 and 18 months. For complex syndactyly, where bones are fused, earlier surgery — often before 6 months of age — is advised to prevent abnormal rotation or angulation of the fingers as they grow. Early release allows the fingers to grow straighter and develop better independent movement.

If the child has an associated syndrome with airway, feeding or other systemic issues, those are stabilised first. The surgical plan is tailored to the individual pattern of webbing, the number of fingers involved, and whether the condition is simple or complex.

Your surgeon will discuss the expected benefits, the likelihood of needing a second procedure later, and the role of post-operative splinting and therapy.

Preparing for syndactyly surgery

Before the operation your surgeon will examine the hands and review any X-rays or ultrasound images that show whether the fusion involves skin only or bone as well. Bring any earlier reports, a list of medicines your child takes, and details of any allergies. The anaesthesia team will assess fitness for general anaesthesia and may order routine blood tests.

You will be told when to stop food and liquids, usually from midnight before the procedure. Pack comfortable clothes that open at the front, a favourite toy or book for the child, and any regular medicines. An attendant should plan to stay overnight. The hospital provides a 24-hour laboratory, X-ray and ECG on site if any last-minute checks are needed.

How syndactyly surgery is done

The operation is performed under general anaesthesia and usually takes 2 to 3 hours. Your surgeon will choose the technique that matches the type and complexity of the fusion. Simple separation with local flaps releases the web space and rearranges nearby skin. When the raw areas are larger, a full-thickness skin graft is taken from the groin to cover them.

Zig-zag flaps are designed to reduce the chance of web creep and contracture as the hand grows. For complex or multiple fused fingers, staged multiple releases may be planned over more than one operation. The surgical team uses magnification and fine instruments to protect nerves, vessels and tendons. After separation the fingers are dressed and a splint is applied. Most children stay 1 to 2 nights in the hospital.

Risks and possible complications of syndactyly surgery

In studies of simple syndactyly, where only soft tissue is joined, a good functional result is achieved with a less than 10% risk of complications. When bones are also fused (complex syndactyly) or there is extra bone between the rays (complicated syndactyly), the functional outcome is poorer and the complication rate is higher.

Reported problems include superficial surgical site infections, which occur more often in complex cases, and nail deformities or difficulty with normal hand movement after complex releases. Skin grafting procedures are associated with more complications than graftless techniques. Children with complex syndactyly often have other medical conditions and may need longer operative times.

Because of the wide variety of syndactyly types, it is very difficult to predict the exact effectiveness of surgery for any individual child. Complex syndactyly patients usually require ongoing follow-up to diagnose and manage post-operative issues.

Recovery and aftercare after syndactyly surgery

After the operation the hand is kept in a splint and elevated to reduce swelling. Pain is managed with regular medication prescribed by the team. The dressing is usually checked at the first follow-up visit. Splinting and hand therapy continue for 6 to 8 weeks to maintain the new web space and prevent stiffness.

The therapy team will teach you exercises to do at home. Keep the hand clean and dry; avoid soaking it until the surgeon confirms the wounds are healed. Watch for increasing redness, swelling, discharge, fever, or if the child complains of worsening pain or the fingers change colour. Contact the hospital straight away if any of these occur. The 24-hour emergency department and ambulance service are available if you need urgent help.

Results of syndactyly surgery

Surgical outcomes are more positive in simple syndactyly than in complex types. The simpler the fusion, the higher the chance of achieving useful and fully recovered hand movement. In simple syndactyly, corrective and operational outcomes are typically excellent, with fewer chances of recurrence or new hand problems.

In studies comparing techniques, skin grafting showed a lower mean web creep score (1.2) than graftless methods (2.1), meaning the web space tended to stay open better with grafts. Parents and surgeons rated the cosmetic appearance higher with grafts. However, skin grafting was linked to a significantly higher rate of hypertrophic scarring than dorsal metacarpal advancement flap reconstruction.

Overall, syndactyly repair is a safe procedure with few major or minor reconstructive complications regardless of the surgical specialty or syndactyly type. Parents should be informed that the surgical treatment is a reconstructive procedure that may require secondary corrections.

Cost and insurance for syndactyly surgery in Jaipur

The typical price range for syndactyly surgery in India is ₹60,000 to ₹1,50,000. The final cost depends on the complexity of the fusion, the technique used, whether skin grafts are needed, the length of the hospital stay, and any additional investigations or therapy sessions.

Jaipur Hospital is a NABH-accredited multispeciality hospital with modular operation theatres, an intensive care unit, and in-house pharmacy and diagnostics. The hospital accepts RGHS, MAA Yojana, CGHS, and a panel of private insurers and TPAs. Ask the admissions team about the documents required for your scheme or insurance plan. For a personalised estimate, contact the hospital on 0141-2551500, 0141-2554139, or 7414 001 001.