Psychiatric Technician Practice Exam

Which finger is associated with clinodactyly in individuals with Down syndrome?

1. Index finger

2. Thumb

3. Fourth finger

4. Fifth finger

The correct answer is: Fifth finger

Clinodactyly is a congenital condition characterized by the curvature or angling of a finger, often observed in individuals with Down syndrome. In this case, the fifth finger, or little finger, is most commonly associated with clinodactyly. In people with Down syndrome, the fifth finger may be curved inward toward the fourth finger. This characteristic is considered a clinical marker and is frequently seen in conjunction with other physical traits associated with the syndrome, such as a single transverse palmar crease or hypotonia. The presence of clinodactyly, particularly in the fifth finger, serves as an important indicator in genetic evaluations and assessments of individuals suspected to have Down syndrome. Recognizing clinodactyly in the fifth finger is significant for healthcare professionals in understanding and diagnosing congenital anomalies associated with chromosomal abnormalities.