amyoplasia congenita

Amyoplasia congenita is a syndrome characterized by multiple specific congenital joint contractures, associated with substitution of muscular tissue by fibrosis and adipose tissue.


The estimated incidence is at  1: 10000 live births. There may be a higher prevalence with twin pregnancies.


The muscles are hypoplastic and replaced by a mixture of fat and fibrosis


It is throught to occur sporadically

Radiographic features

Antenatal ultrasound

Features include


The term a-myo-plasia essentially derives from the Latin meaning no-muscle-development

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