Prevalence:

• 1 in 100 births.

Ultrasound diagnosis:

• Medial deviation or radial curving of the finger at the distal interphalangeal joint usually affecting the fifth finger.

Associated abnormalities:

• Chromosomal abnormalities: bilateral clinodactyly is found in 60% of newborns with trisomy 21.
• The condition is usually isolated.

Investigations:

• Detailed ultrasound examination.
• Invasive testing and array is recommended in non-isolated cases.

Follow up:

• Follow-up should be standard.

Delivery:

• Standard obstetric care and delivery.

Prognosis:

• Isolated cases: good prognosis. No need for postnatal surgery.

Recurrence:

• Isolated familial: 50%.
• Part of trisomy 21: 1%