Abnormality in growth of second last finger of bone...how it could be solved?

Growth differences: can be congenital or aquired. Advice on resolution, if possible or if needed depends much upon the cause and the symptoms. Small differences in length or angulation of a single finger typcially are not impairing, however ruling out a cause and finding out why something is the way it is makes good sense. Usually an exam followed by an xray if indicated is the first step in finding out.