What is the definition or description of: finger deformity?

A visible difference: Any difference in size , motion or rotation when compared to the finger on the opposite hand.

Finger deformity: Is an abnormal appearing finger or what one may consider o be different than what is perceived as normal. The word deformity may apply roan injury. A gradual onset issue such as a disease or a chronic process such as arthritis or be associated with a congenital problem. In the upper extremity deformity may be cosmetic , functionally limiting or both.

Abnormal: Abnormal angulation or bending of the finger.

Variation of normal: Deformities are usually variations from normal. Deformities can be acquired such as from trauma or disease, or congenital. Many variations of congenital hand deformities can occur, but are not very common. Deformities from trauma or disease like arthritis are more common. Fractures that heal at an angle can cause deformity. Joint erosions from arthritis can also cause deformities.