Complex sentence: In younger dogs such as Great Danes less than two years of age, wobbler disease is caused by stenosis (narrowing) of the vertebral canal related to degeneration of the dorsal articular facets and subsequent thickening of the associated joint capsules and ligaments.
Split into simpler sentences: In younger dogs such as Great Danes less than two years of age, wobbler disease is caused by stenosis (narrowing) of the vertebral canal. This narrowing of the canal is related to degeneration of the dorsal articular facets and subsequent thickening of the associated joint capsules and ligaments.