Birth- Syndactyly and delta phalanx

Description: The "delta bone" refers to a situation in which the middle bone in the finger is more of a triangular than a rectangular shape. This can occur with or without syndactyly. Although a delta bone results in a sideways curve of the finger, the joints on each end of the finger are usually normal. Surgery can be performed to straighten an angled bone as the before and after xrays of another patient show here, but is not needed in all cases.