- 1 in 100 births.
- Medial deviation or radial curving of the ﬁnger at the distal interphalangeal joint usually affecting the fifth finger.
- Chromosomal abnormalities: bilateral clinodactyly is found in 60% of newborns with trisomy 21.
- The condition is usually isolated.
- Detailed ultrasound examination.
- Invasive testing and array is recommended in non-isolated cases.
- Follow-up should be standard.
- Standard obstetric care and delivery.
- Isolated cases: good prognosis. No need for postnatal surgery.
- Isolated familial: 50%.
- Part of trisomy 21: 1%