Congenital Absence of Limb or Part of it
1. Failure of Formation
2. Failure of Differentiation
3 . Duplication
4. Overgrowth
5. Constriction band syndrome
6. Miscellaneous
7. Generalized skeletal abnormalities
Failure of formation
Transverse
Longitudinal
Pre-axial - Hypoplasia -thumb/ radius
Post-axial - Ulnar Hypoplasia
Central - Cleft hand
Intercalalted arrest- Phocomelia
https://www.semanticscholar.org/paper/Nomenclature-for-congenital-skeletal-limb-a-of-the-Burtch/25d83583b0d67c1d3edc2f11e33a4db8ea5da45b/figure/0
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