Congenital conditions, including camptodactyly, are uncommon. Despite the rarity of conditions such as camptodactyly, there are accepted patterns, causes, and treatments as noted above. However, there can be an exceptionally unusual cause of any congenital condition which requires a different treatment approach and will change expected outcomes. For example, bony outgrowths can cause a camptodactyly appearance.
Dysplasia epiphysealis hemimelica (DEH) is more commonly called Trevor disease. It is a rare, developmental disorder which affects the growth plates of the body's long bones (technically the epiphysis of the bone). It most commonly affects the knee or ankle but is exceedingly rare even there. Recently, I was able to treat a 6 month old patient who seemed to have Trevor disease of the hand causing an appearance of camptodactyly. Osteochondroma (bony tumor which is benign) may be the most common cause of blocked joint extension. In the case below in a 6 month old child, surgical excision immediately allowed improved motion.
|Young patient with camptodactyly caused by a bony growth.|
|Another view of camptodactyly caused by bony outgrowth.|
|The finger cannot be extended in this case of camptodactyly.|
|These x-rays of camptodactyly demonstrate an unusual appearance of the PIP joint of the ring finger, caused by the bony outgrowth.|
|A side view of camptodactyly finger. Note the deformity of the PIP joint. The bony growth is clearly visible and is blocking the ability of the finger to straighten.|