1
Q
Anteromedial bowing
A
due to deficient fibula acting as tether
2
Q
Genetic involvement with fibular deficiency?
A
sonic hedgehog
- apical ectodermal ridge
3
Q
Ankle instability is secondary to:
A
ball-in-socket ankle joint
4
Q
Associated conditions:
A
anteromedial bowing
- tarsal coalitions (50%)
- absent lateral rays
- femoral deformities
- ACL deficiency
- genu valgum (lateral femoral condyle hypoplasia)
- LLD
5
Q
Achterman and Kalamchi Classification
A
Types IA, IB, II (complete absence of fibula)
6
Q
Foot deformity?
A
equinovalgus, missing lateral rays, tarsal coalitions
