Hemimelia

Hemimelia
Other names	Longitudinal meromelia
Terminal defect of an arm with transverse, incomplete hemimelia
Specialty	Medical genetics

Hemimelia is a birth defect consisting in unilateral or bilateral underdevelopment of the distal part of the lower or upper limb. ^[1] The affected bone may be shortened or not develop at all. ^{[2] [3]}

Types of hemimelia

Hemimelia of the right leg (complete absence of leg with foot on hip)

Transverse hemimelia is a congenital absence of part or all of a limb (including hand or foot) and is called amelia when the entire limb is missing. ^{[2] [4]} Paraxial hemimelia means partial absence of one of the elements of the limb in the longitudinal axis (in phocomelia there is no complete absence of a part of the limb). ^[2]

Sub types of hemimelia are the following:

• Fibular hemimelia, Congenital longitudinal deficiency of the fibula or fibular longitudinal meromelia ^[5]
• Tibial hemimelia, Congenital longitudinal deficiency of the tibia, Congenital aplasia and dysplasia of the tibia with intact fibula, Congenital longitudinal deficiency of the tibia or tibial longitudinal meromelia ^[6]
• Radial hemimelia, Congenital longitudinal deficiency of the radius, radial clubhand, radial longitudinal meromelia or radial ray agenesis ^[7]
• Ulnar hemimelia, Congenital longitudinal deficiency of the ulna, ulnar clubhand or ulnar longitudinal meromelia ^[8]

References

1. "hemimelia", The Free Dictionary, retrieved 2023-03-20
2. Bowen, Richard E.; Otsuka, Norman Y. (2020). "The Child with a Limb Deficiency". rchsd.org. Retrieved 2023-03-20.
3. Lorkowski, Jacek; Zakrzewska, Urszula; Hładki, Waldemar (2006). "Anatomiczne podstawy klasyfikacji wrodzonych ubytków kończyn". Przegląd Lekarski. 63, supl. 5. ISSN   0033-2240.
4. CDC (2021-03-18). "Amelia". Centers for Disease Control and Prevention. Retrieved 2023-03-20.
5. Orphanet 93323
6. Orphanet 93322
7. Orphanet 93321
8. Orphanet 93320