Ultrastructural change of ligamentum flavum in galactosialidosis.

Purpose: Galactosialidosis is an autosomal recessive lysosomal storage disease caused by deficiency of both α-neuraminidase and β-galactosidase due to a defect of the protective protein/cathepsin A. Three clinical subtypes have been described, depending on the age of onset and severity of the symptoms: the early infantile, late infantile and juvenile/adult form. We report an adult-type patient who underwent surgery for galactosialidosis-related spinal deformity, and showed a favorable course thereafter.