Macrodactyly

What is macrodactyly?

Macrodactyly is an uncommon condition in which a baby’s toes or fingers are abnormally large due to the overgrowth of the underlying bone and soft tissue. The condition is congenital, meaning babies are born with it.

Macrodactyly happens more often to hands than feet. Most of the time, only one hand or one foot is affected, but usually more than one digit on that hand or foot is involved. Macrodactyly may coexist with syndactyly, a condition in which two fingers or toes are fused together. Although it is a benign condition, macrodactyly is deforming and can look cosmetically displeasing to you and your child.

There are treatment options for macrodactyly you can discuss with your doctor. Opting for surgery usually involves multiple procedures, however it can help the problem.

What causes macrodactyly?

Researchers do not know why macrodactyly occurs, but they believe that it doesn’t result from anything the mother did (or didn’t do) during her pregnancy. Although babies are born with the condition, macrodactyly is not inherited.

It can occur in association with other conditions and syndromes, including:

What are the symptoms of macrodactyly?

One or more of your child’s fingers or toes will be much larger than his other fingers or toes. Macrodactyly is more commonly considered static, which means that the enlarged finger or toe grows at the same rate as the normal finger or toe on your child’s hand.

However, it can also be progressive, with the affected digits growing faster than the rest of the hand. In the static type, your child’s involved digits will generally be about one-and-a-half times the length and width of the normal digits. If the condition is progressive, the involved digit or digits can become enormous.

How we care for macrodactyly

The Orthopedic Center’s Hand and Orthopedic Upper Extremity Program and our Department of Plastic and Oral Surgery’s Hand and Reconstructive Microsurgery Program have treated thousands of babies and children with macrodactyly and other hand problems. We are experienced treating conditions that range from routine to highly complex, and can provide your child with expert diagnosis, treatment, and care. We also offer the benefits of some of the most advanced clinical and scientific research in the world.

Our Orthopedic Center is nationally known as the preeminent center for the care of children and young adults with a wide range of developmental, congenital, neuromuscular, sports related, traumatic, and post-traumatic problems of the musculoskeletal system.

Our Department of Plastic and Oral Surgery is one of the largest and most experienced pediatric plastic and oral surgery centers anywhere in the world. We provide comprehensive care and treatment for a wide variety of congenital and acquired conditions, including hand deformities.