Arthrogryposis, Distal, Type 1b, also known as da1b, is related to arthrogryposis, distal, type 5 and arthrogryposis, distal, type 5d. An important gene associated with Arthrogryposis, Distal, Type 1b is MYBPC1 (Myosin Binding Protein C1). Related phenotypes are distal arthrogryposis and foot joint contracture