This defect causes the bone to make a wedge shape instead of a normal rectangle. Clinodactyly is fairly common and follows a familial pattern. Clinodactyly can be an inherited condition and may present as a part of an associated syndrome. Clinodactyly is a Greek term for "bent digit," and is used to describe a bent finger or even toe. It originates from Greek klinen, “to bend” and dactylos, “a finger.” 1 Clinodactyly is a physical sign, not a disease. Clinodactyly is a descriptive term that refers to a radial angulation at an interphalangeal joint in the radio-ulnar or palmar planes. The exact incidence of this condition is unknown, in part because there is no precise definition of what level of curvature is normal and abnormal. Underlapping toes are commonly seen in the adult and pediatric population. A special form of underlaping toes is called clinodactyly or congenital curly toes. What is clinodactyly and why has my child got it? Underlapping toes are seen in both pediatric and adult populations. If you have shortened fingers or toes, other members … Clinodactyly in Children This leaflet offers more information about your child’s clinodactyly of the finger or thumb. The toes most often involved are the fourth and fifth toes. Brachydactyly is an inherited condition, which makes genetics the main cause. In the hand of a child with Apert's syndrome, the thumb may have a delta phalanx and may present as clinodactyly. A significant percentage of people with Down syndrome , for example, have clinodactyly. It is actually a rare disorder, affecting 10% or less of the population. With clinodactyly, toes three, four, and five on both feet are usually affected. Jones 19 suggested the term delta phalanx for this triangular bone, and this term is in general use. The main cause of Clinodactyly is the abnormal growth and alignment of the small bones of the finger. If you have any further questions or concerns, please speak to the staff member in charge of your care. Some people with this condition do have crooked bones, but the finger still appears straight like a normal finger. Clinodactyly tend to be caused by a developmental defect in the bones of the finger. It typically affects the 5th finger. Clinodactyly of the thumb occurs because of an extra triangular phalanx between the proximal and distal phalanx. Educational video Camptodactyly of the little finger.Camptodactyly is a fixed flexion deformity at the PIP of the little finger. The condition is sometimes known as clinodactyly, but this is a broad term that also refers to curled toes, as well as to a number of similar conditions affecting the hands and fingers.. There is a certain category of underlapping toes known as clinodactyly (congenital curly toes). Clinodactyly [1] is a genetic pathological condition in which a child is born with fingers that are curved or bent at an angle. 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