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Background: Syndactyly or webbed fingers is one of the most common congenital malformations of the upper extremities, but it comprises few new cases annually. The purpose of treatment is to enhance hand function., Method: The article is based on current text books and literature searches in PubMed as well as the authors' clinical experience within this field., Results: The purpose of surgical treatment is to separate the fingers and reconstruct a webspace. It is difficult to indicate exact treatment results because of large variations in the extent of the deformity. For syndactyly involving only soft tissue (simple syndactyly), a good functional result is achieved with a less than 10% risk of complications. Syndactyly where also the bones have fused (complex syndactyly) or where there is additional bone formation between two digital rays (complicated syndactyly), gives a poorer functional outcome and a higher risk of complications. Gradual stretching of the tissue using a distraction device enables separation of fingers one was previously reluctant to separate., Interpretation: It should be possible to expect safe separation with a good and independent function of the fingers with surgical treatment. The parents should be informed that the surgical treatment is a reconstructive procedure that may require secondary corrections.