Arthrogryposis Multiplex Congenita.

Arthrogryposis multiplex congenita (AMC) is a complex, etiologically diverse, clinical descriptor identified in a variety of diagnoses characterized by multiple congenital joint contractures. The root cause of AMC is decreased fetal movement in-utero, whether resulting from maternal or pregnancy influences, nervous system pathology, or an underlying genetic abnormality. Prenatal diagnosis via ultrasonography can be challenging and may require additional imaging techniques or studies. After birth, these infants may require assistance breathing and feeding depending on the underlying diagnosis. Physical therapy and surgical intervention of the contractures are the mainstays of therapy, and outcomes can be good when intervention is provided in a timely manner. Those infants with syndromic causes of arthrogryposis are more likely to have poor outcomes; therefore, determining the underlying etiology for AMC is important as this can influence counseling regarding individual prognosis as well as future pregnancies. [Pediatr Ann. 2020;49(7):e299-e304.].