What is Macrodactyly?

Macrodactyly is a very rare, overgrowth disorder of the underlying bone and soft tissue (nerves, fat, and skin) in ones fingers or toes.  Macrodactyly affects the fingers/hand more often than the toes/foot.  It usually only involves one hand or foot, but typically more than one digit on a hand or foot is affected by it.  There are two types of macrodactyly:

•Static macrodactyly - when the affected fingers or toes grow at the same rate as the unaffected fingers or toes.  They will always be larger, but grow at a consistent rate. 

•Progressive macrodactyly - when the affected fingers or toes grow at a faster rate than the unaffected fingers or toes. 

Macrodactyly is congenital, meaning you are born with it, although it is not inherited. 

Macrodactyly causes a person's hand or foot to be abnormally large and in turn can be cosmetically displeasing.  In most cases, multiple surgeries are the only option in helping to make the hand or foot improve in function and appearance. 


*This is not intended to be a diagnosis.  The information listed above is the information we have gathered from various doctors and research we have done.*