This doll's name is Delilah. She is just over a year old and has a syndrome called Larsen's Syndrome. Larsen's syndrome is congenital dislocations of the joints. However, some kids with this syndrome are also born with Arthrogryposis. In other words, Larsen's Syndrome can have Arthrogryposis as a trait & is under the '"umbrella" of Arthrogryposis.
From Reece's Rainbow