proximal symphalangism 2

A proximal symphalangism that is characterized by absence of the cuboid bone and lack of shortness of the first and fifth metacarpal bones, and the presence of distal interphalangeal joint fusions and flat feet and that has_material_basis_in heterozygous mutat

A proximal symphalangism that is characterized by absence of the cuboid bone and lack of shortness of the first and fifth metacarpal bones, and the presence of distal interphalangeal joint fusions and flat feet and that has_material_basis_in heterozygous mutation in the GDF5 gene on chromosome 20q11.

Signs and symptoms

• Proximal fifth finger symphalangism
• Abnormal finger flexion crease
• Clinodactyly of the 5th finger
• Pes planus
• Short 2nd finger