This “acquired spinal stenosis” can occur from the narrowing of the space around the spinal cord due to bony overgrowth from osteoarthritis combined with thickening of one of the ligaments in the back ...

In addition, cartilage in discs and facet joints erode, which results in narrower joint spaces and bone spurs, both causes of spinal stenosis. Most cases of spinal stenosis result from ...

Congenital nasal pyriform aperture stenosis (CNPAS) is a rare condition characterized by a narrowing of the pyriform aperture, which is the bony opening at the base of the nasal cavity.