What is clinodactyly?
Clinodactyly refers to the side-to-side curvature of a finger or toe. In most individuals, the degree of curvature is minimal and usually involves the small fingers. There is a hereditary element of finger curvature, especially when it involves the same finger on both hands. The basis for clinodactyly is that the middle bone in the finger is underdeveloped and, instead of being rectangular, it is trapezoidal.
Clinodactyly: Causes, Associations, and Treatment Options
The growth plates are not parallel, causing one side to grow more than the other side.
Clinodactyly can also be related to a larger difference such as macrodactyly, polydactyly, syndactyly, or after surgical correction of finger differences.
In most cases, clinodactyly is harmless and does not need to be corrected. In a small number of patients, the curvature may be severe enough or worsen over time to interfere with adjacent digits. This is most noticeable when someone tries to flex his or her fingers into a fist. In these patients, surgery involves realigning the growth plates with an opening or closing wedge osteotomy.
Clinodactyly may occur as an isolated finding in a person who is entirely normal or it may be found in association with other congenital malformations and, sometimes, with developmental delay. It is a common component of Down syndrome (trisomy 21) and Klinefelter syndrome (XXY).
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Dr. Panossian is a board-certified plastic surgeon with fellowship training in pediatric hand surgery and vascular anomalies under Drs. Joseph Upton and John Mulliken at Harvard-affiliated Boston Children's Hospital, and in pediatric plastic surgery at the Hospital for Sick Children in Toronto under Dr. Ronald Zuker.
Whether your child has been recently diagnosed or has been managing clinodactyly for years, Dr. Panossian can help you understand your options and develop a personalized treatment plan.
Every child deserves expert care. Schedule a consultation with Dr. Panossian (in person or virtual) to explore treatment options for your child.