A distal arthrogryposis characterized by inability to open the mouth fully and pseudocamptodactyly that has_material_basis_in heterozygous mutation in the MYH8 gene on chromosome 17p13.1.
synonyms:
MESH:C535857,
Hecht-Beals syndrome,
GARD:2621,
mouth, inability to completely open, and short finger-flexor tendons,