polydacytyly

Polydactyly

Classification

 

Pre-axial / great toe / 15%

Central / 2-4 MT / 5%

Post-axial / 5th MT / 80%

 

Type A - articulated

Type B - rudimentary 

 

Epidemiology

 

2 in 1000 births

- 30% positive FHx

- autosomal dominant

 

Associated MT anomalies common

- block MT / Y-shaped / T-shaped /wide head

 

Treatment