Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Sheldon-Hall syndrome ?
    ### Response:
    Sheldon-Hall syndrome, also known as distal arthrogryposis type 2B, is a disorder characterized by joint deformities (contractures) that restrict movement in the hands and feet. The term "arthrogryposis" comes from the Greek words for joint (arthro-) and crooked or hooked (gryposis).
    